When I switched from 3D to 2D and began to sketch this error message appeared. But I fixed this by closing and opening the SW then this message disappeared. I wish to know the reason for problem.
There can be several reason for the error. If you keep on seeing the error then use SOLIDWORKS Rx tool and send the log files to the company (VAR) you've bought SOLIDWORKS from.
Are you running a macro or program that involves SolidWorks or SolidWorks documents? Only time I have seen this message is from a program we have that performs an action on a drawing. Sometimes the drawing closes prematurely then when the program tries to access the drawing again, this message gets generated. This is just a possibility; I am sure there are other causes for it.
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