• Bugs fixed with rectangular arrays where single-row and/or column arrays confused AutoCAD.
• The command now remembers its settings from one invocation to the next, within a single drawing session.
• Timebomb has been moved on 7 days to 21 April.

The ReadMe.txt file in the zip explains how to uninstall the old version. Simply delete the old ClassicArray.bundle folder from the place you put it. Replace it with the new ClassicArray.bundle folder from the later zip file. Then try to break it!

Please see the main ClassicArray Beta post for the download, and add any comments there.

The Good

So what’s good about the Array command in AutoCAD 2012?

• Associativity. By default, arrays are now associative objects. This means that if you want to, say, modify the distance between columns a couple of days after you drew them, you can now do so. If you’re a Ribbon user, it’s easy to change array parameters because when you select an array, you get a Ribbon tab dedicated to just that task. If you’re not, then the Properties palette allows you to do the same thing.
• Dynamic preview. Once you have set your various options appropriately, you can just move your cursor around and click to choose things like the number of rows and columns.
• Path option. In addition to rectangular and polar arrays, you can now array along a path such as a polyline, similar to the Measure and Divide commands. But because it’s associative, if you edit the path, the array changes too.
• 3D functionality. It is now easy to create 2D or 3D arrays with the Array command. You can add levels (Z) to the rows (Y) and columns (X) of arrays, and this applies to all three types of array. You can also provide a elevation increment, which means the items get progressively higher the further they are from the base row. Think of the seating in a stadium as an example, although real seating arrangements are usually more complex than you will see in the Autodesk examples, so in the real world I don’t expect this feature to be used much.

The Bad

So far so good, then. But what’s not so good?

• 1990s user interface. Can you remember when the Array command had only a command-line interface? Because that’s what it has now. While some of us old-timers may yearn for some aspects of the “good old days” of 1997′s Release 14, I don’t think many of us want to lose truly useful functionality. But that’s what has happened here. The Array command uses the new command line. The -Array command uses the old command line. Nothing uses a dialog box; there’s no ClassicArray command. *
• Bugs and limitations. The new command line interface ain’t cooked. There are a bunch of bugs and limitations that mean some valid inputs get rejected, some arrays get drawn incorrectly, and some can’t be created at all. There are other aspects of the feature that strike me as not well thought out, such as the extra step involved in creating a non-associative array (not everybody will need or want associativity), or the clumsy way in which users who want to keep existing objects are expected to mess about with a system variable that affects unrelated things. **
• Missing API. Autodesk’s long-standing grotesque neglect of LISP continues with the new Array object. There is no meaningful ActiveX API for such objects. If you wanted to use ActiveX to create a simple array, you would have to pretty much reproduce Autodesk’s array creation code (it’s an anonymous block, really) and hope you got it right. There is, of course, no documentation whatsoever to help you do this.

On balance, the AutoCAD 2012 Array command should be viewed as a positive, but it could (and should) have been done a lot better.

* Disclaimer: I have written my own ClassicArray™ command, and I intend to provide it as an add-on soon. Watch this space over the next few days for a public Beta. Edit: here it is.

** ClassicArray acts as a workaround for many of these bugs, limitations and design failings.

So, given that definition, how stable is your AutoCAD, or vertical AutoCAD variant? How often does it crash, or mess up your drawings? How does that stability compare with your experience of earlier releases? How does the stability of plain AutoCAD compare with that of its vertical siblings?

Please add your comments. If this proves a popular topic, I may run some polls.

If the user of 2008 or later used the background mask feature when creating Multileaders, they might appear to be fine on the screen. But when plotting, the text part of each leader will come out as a filled black rectangle. That sort of thing has a long history of happening with wipeouts in some cases, depending on the output device and driver. This problem is different because it happens every time, and with all output devices.

What can be done if you are the recipient of such drawings? The -ExportToAutoCAD command, which can be used to create a version of the drawing with most proxy objects converted to standard AutoCAD objects, does not work with Multileaders. So I can see three options, in descending order of desirability:

1. Upgrade to a more recent release of AutoCAD. Depending on your circumstances, this may not be a practicable solution.
2. Forbid the use of Multileaders among your users and all parties producing drawings for you. This also may not be a practicable solution.
3. Explode the leaders. This results in them becoming dumb text and lines, with no background masking. However, the masking can be easily re-established using the Textmask command that is part of the Express Tools.

It fills me with horror to suggest something as awful as exploding anything even remotely dimension-like, but if you have one of these drawings and you’re forced by circumstances to use AutoCAD 2007 or earlier, what alternative do you have?

This, along with various other Multileader design issues (such as non-integration with dimension styles), appears to be a natural by-product of Autodesk’s decision to add these objects part-way through the lifetime of a DWG version. The 2007 DWG format is shared by AutoCAD 2007, 2008 and 2009, but this interoperability issue affects even users of those releases that supposedly share the same format. Users of vertical AutoCAD variants are, unfortunately, accustomed to this sort of thing happening every year.

• Owen’s utility will work with any AutoCAD variant from 2007 on; Autodesk’s fix is currently restricted to Civil 3D 2009, 2010 and 2011. As this problem is definitely not confined to Civil 3D, and may need to be dealt with by non-Civil 3D users, that could be the dealbreaker right there.
• Owen’s can be installed by anyone by simply copying a file and loading it when needed or in the Startup Suite; Autodesk’s requires admin rights to either run an installer program or manual replacement of a program component, depending on the release.
• Owen’s loads and runs as the user requires; Autodesk’s runs automatically when opening and saving a drawing.
• Owen’s provides some information about what is getting cleaned up; Autodesk’s operates in total silence.
• Owen’s utility can take a while to scan through everything in a complex drawing; Autodesk’s appears to take no longer to open the drawing than normal. To give you some idea of the times involved, in one test in Civil 3D 2011, opening a blank ( but 2.2 MB!) drawing based on the Civil 3D template took 3.6 s with or without the fix; Owen’s cleanup took 0.7 s. In another test on an oldish PC with AutoCAD 2010, cleaning up a drawing with 2.8 MB of real content took Owen’s utility about 15 seconds.

For my purposes, Owen’s utility is what I need, because the users who need to clean up these drawings use AutoCAD, not Civil 3D. I’ve set up a batch process for these users, which opens each selected drawing, runs Owen’s utility and saves the drawing. However, I suggest Civil 3D users install the relevant updates and patches anyway, as they fix more than just this problem. In addition, in Civil 3D 2011 without the Autodesk fix, one of the problems fixed by Owen’s cleanup (a AeccDbNetworkCatalogDef one) is then immediately recreated by Civil 3D.

The upshot is that Civil 3D users should at least apply Autodesk’s fixes; everybody else should use Owen’s.

Using Owen’s fix, it is interesting to see what it reports as being the problem in particular drawings. Here’s what one of my non-Civil 3D problem drawings shows up:

Command: cleanlanguage
Scanning drawing for corrupt objects...
Corrupt object AecDbScheduleDataFormat<2F84> CLEANED
Found 1 corrupt object

Here’s what the Civil 3D 2011 ANZ template shows up when cleaned:

Command: cleanlanguage
Scanning drawing for corrupt objects...
Corrupt object AeccDbNetworkCatalogDef<8B7> ERASED
Corrupt object AeccDbLegendScheduleTableStyle<1619> CLEANED
Corrupt object AeccDbLegendScheduleTableStyle<161B> CLEANED
Corrupt object AeccDbLegendScheduleTableStyle<161A> CLEANED
Corrupt object AeccDbLegendScheduleTableStyle<161F> CLEANED
Found 5 corrupt objects

It looks like every Civil 3D 2011 drawing based on these templates has been going out corrupt in 5 different places. Hopefully, Autodesk will quickly get on to fixing up the Civil 3D template situation, and will incorporate the automated open/save cleanup in future updates to AutoCAD itself and all the other AutoCAD-based verticals.

As Owen has a long and distinguished history of being consistently and demonstrably better at AutoCAD programming than Autodesk’s own programmers, I’d be tempted to try this one first. However, Civil 3D users should probably apply the patches and updates anyway to help resolve other issues.

To find Owen’s utility, go to the ManuSoft ARX freebies page and look for CleanLanguage.zip. While you’re there, use the Software menu to check out some of the other stuff Owen has done.

* Edit: I have now tested it, and it works beautifully in both AutoCAD 2010 and Civil 3D 2011.

What’s left to do? Obviously, not all recipients of these drawings are going to have Civil 3D. In fact, prior to isolating Civil 3D as one definite source of the problem, I had spent a lot of time helping out AutoCAD users clean up language-pack-infected drawings, using awkward and dangerous copy-and-paste methods. So Autodesk has AutoCAD and all its vertical variants to work through yet as far as a cleanup mechanism goes. Also, the problem needs resolving at the source end. All “infected” templates (in Civil 3D and any other verticals that may have the problem) need fixing and distributing to users as quickly and effectively as possible, in order to reduce the number of drawings being created with the problem. I know individual users can do this for themselves, but large numbers of users won’t do so if left to their own devices, causing problems for everyone else. As the originator of the problem, Autodesk has a duty to do its very best to resolve it.

Thanks, Autodesk, for quickly getting started on fixing the problem and providing a partial solution in a timely manner. I hope you can provide the rest of the solution equally efficiently.

However, there are some holes in the workaround, only some of which can be filled.

• Under 64-bit Windows 7, the Search pane is blank, as it is in the CHM Help for earlier releases on that platform. This is stated on the download page. Index works well, but Search doesn’t. As Search is one of the worst aspects of the browser-based Help, this is a rather unfortunate.
• There is no obvious way of making the CHMs provide contextual help. Don’t bother pointing at acad181.chm in the Files tab of Options, it doesn’t work. Edit: See Chris Cowgill’s post on the AUGI forums for a partial workaround.
• Even without contextual help, no advice is provided for calling the CHMs from within AutoCAD; you are only told that you can set up a shortcut on your desktop and double-click on that when you need it. However, you can set up an alias command in AutoCAD. To do this, edit the acad.pgp file or use the Express Tools Aliasedit command to set up a shell command. The alias name can be whatever you like (e.g. HEL), the command name should simply be the path and filename of the main acad181.chm file.
• The CHM files are currently available only in English.
• The set of CHM files is incomplete. See below for more details and what you can do about it.

These are the CHM files provided with AutoCAD 2011:

acet.chm – Express Tools
AdRefMan.chm – Autodesk Reference Manager
adrefmanctxt.chm – Not to be launched manually
ole_err.chm – Not to be launched manually
webbrw.chm – Not to be launched manually

These are the CHM files provided in the zip file download:

acad181.chm – Main AutoCAD 2011 Help file
acad.readme.chm – Readme
acad_acg.chm – Customization Guide
acad_acr.chm – Command Reference
acad_aug.chm – User’s Guide
acad_dpg.chm – Driver and Peripheral Guide
acad_install.chm – Installation
acad_nfw.chm – New Features Workshop
adsk_lic.chm – Licensing

These are the CHM files that are missing:

acad_aag.chm – ActiveX and VBA Developer’s Guide
acad_alg.chm – AutoLISP Developer’s Guide
acad_alr.chm – AutoLISP Functions
acad_alt.chm – AutoLISP Tutorial
acad_car.chm – Connectivity Automation Reference
acad_dev181.chm – Developer Documentation
acad_dxf.chm – DXF Reference
acad_sso.chm – Sheet Set Objects Reference
acadauto.chm – ActiveX and VBA Reference
adsk_brw.chm – Licensing – (this appears to be a later version of adsk_lic.chm).

Do you need any of the above? I did. To obtain a full set of AutoCAD 2011 CHM files, I had to do the following:

1. Download a vertical AutoCAD 2011-based variant. I used AutoCAD Civil 3D 2011, because I am entitled to download that from the Subscription Center. You may need to download an evaluation copy of a vertical. If so, make sure you delete the files after your evaluation period of 30 days, won’t you? Hopefully, Autodesk will have provided a better workaround by then.
2. Double-click on the downloaded executable (which is actually a self-extracting archive). You will be prompted for a location for the files to be unzipped to. I accepted the default of C:\Autodesk\AutoCAD_Civil3D_2011_English_32bit.
3. After the unzipping process is complete, the installtion window will appear. Pick Exit; you do not need to go ahead with the whole installation.
4. Search for the CHM files in the unzip location. There are a variety of locations, some of them containing duplicate files, but I was able to find what I needed in C:\Autodesk\AutoCAD_Civil3D_2011_English_32bit\x86\en-US\C3D\Acad\Help.
5. Copy the files from here to a safe location, and set up shortcuts and/or alias commands to access them.

Note that I can’t vouch for the completeness or correctness of these files (which may be why Autodesk didn’t include them), but I can’t do that for the HTML versions either. For those of you in non-English-speaking locations, I would be interested in finding out if you can use this method to obtain non-English CHM files. Are there non-English AutoCAD 2011-based verticals available for download yet? If so, are the CHMs in your language?

Finally, if you are having trouble reading CHMs over a network, check out this Microsoft document on a security update that may be the cause.

• Do Autodesk customers need to be on Subscription to receive bug fixes? No, they do not.
• Do Autodesk customers need to have purchased the software within the last 90 days to receive bug fixes? No, they do not.
• Do Autodesk customers need to have reported certain specific bugs to receive bug fixes? No, they do not.
• Do Autodesk customers even need to be running the current release to receive bug fixes? No, they do not.

AutoCAD 2010 Update 2 (that’s Service Pack 2 in the old language) has just been released for the users of last year’s software. This includes the Update 1 changes. The usual caveats apply, including reading the Readme first. As usual, Autodesk’s oddball numbering system means that after installation, Update 1 shows up as Version 2 and Update 2 shows up as Version 3 in the About screen.

This Update applies to straight AutoCAD (and LT), not the vertical variants. I have no news about non-English versions. Patrick Emin informs me these updates are language-independent.

Is this happening to you or anybody you work with? Have you managed to work out if there is something that triggers it? Is there a user interface setting or method of drawing that you suspect of being the culprit?

Has this happened to you? If so, please comment. Any comment is welcome, but it would be great if you could provide the following information:

1. AutoCAD (or vertical) release(s) where you have seen this happen. Also mention any recent releases where you have seen it not happen.
2. Command line status when you have seen this happen (docked, floating, off, all of the above).
3. Dynamic input status when you have seen this happen (on, off, on but with some options turned off, all of the above).
4. Screen configuration when you have seen this happen (single, dual, either).
5. AutoCAD main window status when you have seen this happen (maximised, floating, either).
6. Other than this problem, does AutoCAD’s general response to input seem “sticky”? Sticky keyboard, mouse, or both?
7. Other than AutoCAD, do any other apps give sticky response on the same PC?
8. General PC stats (OS, CPU type and speed, RAM size, graphics card).

Please add anything else that you think might be useful in tracking this down or working around it. If I learn anything that might be useful, I’ll report back in a later post.