Error Message: Parametric Blocks

I'm working on a drawing with parametric blocks in, but nearly every time I try to edit a block in the Block Editor I get the following message:

INTERNAL ERROR: !dbutil.cpp@698: eWasOpenForWrite

It then offers me the chance to save changes, however, when I tried to open the 'recover' file, I was told the drawing was not valid.

Any ideas folks, as I'm pulling my hair out, (and I don't have very much to pull out).

First, take a look at this post to the AutoDesk Discussion Groups similar to yours.

http://discussion.autodesk.com/forums/thread.jspa?messageID=4874266

Let us know if the "fix" works for you or not.

I never would of guessed it was a linetype problem!!

Thank you remark, that's fixed it.

Well until you asked the question I never would have thought of it either. You are entirely welcomed Maxelkat. Thanks for getting back to us too with an update.