This page describes a specific crash when using our software. The crash generates an error report that you can send to us. We will direct you to this page if you are experiencing the crash. Otherwise, you can safely ignore this information.
How to Cause the Crash
- Use AutoCAD 2011 or later.
- Open multiple drawings in AutoCAD.
- Open a Design Master dialog box in one of the drawings.
- Try to switch to another drawing in AutoCAD. Try to switch back to the original drawing in AutoCAD.
What Should Happen
On step 4, when you try to switch to a different drawing, AutoCAD should not allow that. This is what happens 99% of the time. Even for people who experience the crash, this is what will happen most of the time.
What Happens During the Crash
When the crash happens, on step 4 they are able to switch to the other drawing. They cannot run any commands in it. Sometimes the crash happens here. Other times, they switch back to the original drawing. Sometimes the crash happens when they switch back. Finally, they close the dialog box, and sometimes the crash happens then.
Cause of the Crash
This crash is caused by a bug Autodesk introduced in AutoCAD 2011. In that release they made significant changes related to supporting the Mac that caused a number of other bugs we’ve run into.
Our software depends upon being loading in AutoCAD. When the crash happens, parts of our software have been unloaded from AutoCAD. We try to use that part of the software, and we crash, because there’s nothing there.
It looks like a crash of our software, but it is being caused by a bug in AutoCAD.
One potential solution to the problem that will work immediately is to set the TASKBAR system variable to 0. To make the change, type TASKBAR in the AutoCAD command line, then type 0.
The TASKBAR system variable controls whether multiple open drawings are displayed separately or grouped on the Windows taskbar. Changing it to 0 will group all the drawings on the taskbar. If you make this change, you will lose the ability to select different drawings from the Windows taskbar.
This solution should solve the problem. Unfortunately, it changes the behavior of AutoCAD and has to be performed on each computer individually.
Long-term, it would be better to have a solution that does not require a change in the behavior of AutoCAD and happens automatically. Since this is a bug in AutoCAD, Autodesk will have to be the ones to fix the error.
We have contacted Autodesk about the error, and their answer is that they are not going to look into the error unless we can consistently recreate it. So far, we have not been able to figure out how to do that.
If you are able to consistently recreate the crash, we would like to hear from you. Our goal would be to document the steps and conditions necessary to recreate the crash to send to Autodesk so they can eventually fix the error for us.