Loading the dwg shows something like this "Preparation of the working space AT_START_DOEVENTS"

Hi.

I have a problem. Loading the dwg shows start AutoCAD window with message like this "Preparation of the working space AT_START_DOEVENTS".

In this state it freezes for a long time. And next launches of AutoPlant are not useful.

Only rebooting the computer solves this problem.

 

Wha is it?