ExportCAD ,report the issue is :error 999998

[laoyuan727]

i want to export shapefile to CAD use ExportCAD　through gp tools, report the error 999998:unexcepted error,why

[dcfrate]

Anyone? Anyone?

I've also been having little luck converting to either DGN or DWG from file GDB or SHP. I've been blaming file size so far, as I'm using a selection of contours that is >250MB. I was successful converting a much smaller selection to DWG. After more than an hour on the phone with ESRI support, we still couldn't find a solution.

Has anyone been able to figure this out?
I've tried across the network as well as staying on my hard drive. I've tried various settings. I've tried running as Python script. Nothing works.

Here's the error from Python (appears after script runs for at least a minute):
Traceback (most recent call last):
File "C:\Python26\ArcGIS10.0\Lib\site-packages\Pythonwin\pywin\framework\scriptutils.py", line 326, in RunScript
exec codeObject in __main__.__dict__
File "G:\Projects\DataRequests\AEI\exportDWG.py", line 17, in <module>
arcpy.ExportCAD_conversion("G:\\Projects\\DataRequests\\Storage.gdb\\contours", "DWG_R2010", contours_DWG, "Use_Filenames_in_Tables", "Overwrite_Existing_Files", "")
File "C:\Program Files (x86)\ArcGIS\Desktop10.0\arcpy\arcpy\conversion.py", line 946, in ExportCAD
raise e
ExecuteError: ERROR 999998: Unexpected Error.


Thanks.