I had a lot of issues with AutoCAD 2009 crashing suddenly. Usually when logging back on when the screen-saver would lock the screen. I worked through the issue with Autodesk and come to find that it was a graphics driver issue. I have a Nvidia FX3700 and was using using the latest "approved" driver from Autodesk. Using the "Tune Log" within the "3dconfig" command in AutoCAD, I got a clue to what AutoCAD was doing with its graphics driver. To see the approved driver list go here:
http://usa.autodesk.com/adsk/servlet/hc?siteID=123112&id=6711853&linkID=9240618
I actually had to install the third oldest driver on the list to get a stable AutoCAD. The second oldest caused Windows blue screens and required me to boot into safe mode to restore it. I would suggest downloading all of the approved drivers before trying, so that they are available on the computer in case the worse happens.
2010-10-28
Dimension Fits Missing
When we recently upgraded to AutoCAD Mechanical 2009 and a few users could not choose their fits when dimension (ie H7, f6, etc...). It took a while to figure out, but another user found the answer. There was file corruption with the fit data (VAL tables). We copied the files from a known working set (ex. ACADM 2009\Acadm\gen\Val) to the non-working AutoCAD computer (AutoCAD should be shut down while copying the files). The fits are back!
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