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I only experienced the crashing in the following file:
XR-15-0134-DDAI-BORDER.dwg
However, I was able to access the file by the following:
Load Microstation.
On the Microstation Manager dialog, highlight the XR-15-0134-DDAI-BORDER.dwg file.
Click the Options button on the Microstation Manager dialog.
On the DWG Open Options dialog, expand the Basic tree.
Locate Decimal, Scientific or Fractional Units.
Click on Design Center Units.
Select Seed File Master Units from the list.
Click the Ok button on the DWG Open Options dialog.
Open the XR-15-0134-DDAI-BORDER.dwg file by clicking the Open button on the Microstation Manager dialog.
The file should open and you should be able to work in it, however, I don’t think I’ve resolved System Fault: 20301 issue.
The error I received is shown at the following Communities post:
http://communities.bentley.com/communities/user_communities/fdot_cadd_support/f/343079/t/114520
Perhaps they are related. I’m still looking into it and will keep you posted.
System Fault: 20301 error:
I think we’re a little closer to knowing the cause of the System Fault: 20301 error.
This Error also may be related to 2 other errors we come across:
System Fault: bad memory access
Exception has been thrown by the target of an invocation
In the example presented, the System Fault: 20301 error seems to be due to a CadInputQueue.SendCommand "Save Design"Command initiated in our LoadVBA.mvba necessary for our Drainage Platform to function correctly coupled with the Microstation Preference setting Automatically Save Design Changes. In the FDOTSS4 workspace, we use a LoadVBA.mvba to set settings and perform certain functions when opening a Microstation session. The settings, functions and application initiation are necessary for our FDOTSS4 workspace to function correctly for our many disciplines.
In the case where DWG's will be edited in a Microstation Session in our FDOTSS4 workspace try the following:
Comment out the following from the configuration in the SiteFdot.txt file (in red):
%if !defined (_CONSOLEAPP)
MS_DGNAPPS > $(_USTN_SITE)menu/Program/ustn0811/cadpilot.ui.ma
MS_DGNAPPS < ustnqcinspector
MS_DGNAPPS > FDOT.LDM
MS_DGNAPPS > $(_USTN_SITE)apps/SyncXS/SyncXS.dll
#MS_VBAAUTOLOADPROJECTS > $(_ustn_site)vba/LoadVBA.mvba
%endif
Navigate to the Microstation Menubar > Workspace > Preferences… > Operation > Set Operational Preferences > toggle off the Automatically Save Design Changes.
Note: You will have to manually save your files.
This will stop the initial System Fault: 20301 error, but will affect your FDOTSS4 workspace.
Subsequent file switching Crash with the “Save Design” and Automatically Save Design Changes:
There is another issue which I believe is related to the System Fault: 20301 error. This issue is caused by having a DGN file referenced to a DWG file with the “Save Design” and Automatically Save Design Changes on.
This issue produces the following errors when switching from DWG to DWG with Automatically Save Design Changes toggled on and the Loadvba.mvba not commented out in the Sitefdot.txt file:
Generally, having a DWG file referenced to a DGN is opposite of our current recommended workflow involving utilization of DWG’s in a Microstation session. If DWG’s are needed for some detail work within a project we recommend referencing the DWG to a DGN and Merging to Master the needed detail from the DWG.
Also, there is no true compatibility with DGN and DWG files. (The Working Units/Resolution don’t truly/exactly translate.)
What I found is the issue seems to be related to having a DGN file Referenced to a DWG file with a substituted name (Microstation substitutes automatically) which changes the DGN extension to DWG. When closing the file with substituted DGN to DWG extension reference, Microstation Crashes. The cause of the crash seems to be related to Microstation’s Automatically Save Design Changes Preference. Microstation seems to attempt to write to the file being closed (probably trying to save the Substituted DGN to DWG name). However, when a DGN file is attached as a reference to a DWG file it is not possible to store the DGN name in a the DWG file.
Workaround Suggestion:
The workaround is to Toggle off the Automatically Save Design Changes in the Microstation Menubar > Workspace > Preferences… > Operation > Set Operational Preferences and comment out the Loadvba.mvba from the Sitefdot.txt file.
Merge into master the detail needed from the DWG and Detach the DGN referenced to the DWG file and only work in DGN’s.