hi.
Thank you for fast response Smiley Happy
To answer your first question:
"Have you tried to create a field in a new drawing (based on an original AutoCAD template)?"
Yes, I tried in 2013 and 2014 as well - the same error occurred.
Second question:
"And what is exactly the position when AutoCAD crashes, when starting the command, placing the insertion point, select a field type in the dialog, ...?"
It is happening when I set shape of a text box, release LMB and... error appear.
...I have just figured out that it is happening when I move my mouse after realising mouse button. If I don't move mouse after set second corner of an text box nothing is happening.
Can it be a mouse driver?