Lines rotating after shut-down

I've got a strange problem that I never came across before. I am drawing lines that are horizontal and vertical. After shutting down for the evening and restarting in the morning, some of my lines are rotating ever so slightly. I have seen the rotation value from .004 to .0000004 degrees. Thinking that it was something that I did without knowing, I had a few other co-workers watch me as I redrew these lines and double checked that they were correct. I restarted my computer and found that some, but not all the lines were rotated again, but at different values. These are lines that are not in a block, so blocks being redefined aren't an issue. Has anyone ever run into this problem before? I can't seem to find anything on this.

Could it be a template setting that is getting reloaded everytime AutoCAD is starting?

Are you running a template? If so, try opening a doc without using the template, and try drawing the lines and restarting AutoCAD - see if you get the same problem

Lee

I am not using templates.

I think it is a corrupt drawing. Run an Audit on it and when it asks Fix errors? respond Yes. Then do a regen and save. Quit out of the drawing then reopen it.

Have you tried saving the drawing as a DXF file and working that back into a new drawing file?

I think I may have fixed it. I ran an Audit and fixed errors. Then I save the drawing to a .dxf, regen and save. Close the drawing, re-open and saveas back to a .dwg. I am doing this to all the drawings that I open. Thanks for all the help.

Glad you got the problem sorted in the end, sorry I could not be of more help

"I am doing this to all the drawings that I open." While I'm glad to hear you got your problem solved is it really necessary to do this to ALL the drawings that you open? What makes you believe that this is required? That would mean you have multiple corrupted drawings. What might be the cause of that?

once i "fix" a drawing, i dont need to do this anymore to that drawing. this problem started just the other day, but we have probably 100 drawings on this project. i suspect that it is something that our customer has supplied to us, and we don't know where the problem has started. i dont want to use something from another corrupted drawing and have it corrupt the drawing i am working on. the few extra minutes spent now will hopefully stop alot of headaches later in the project. thanks for the concern.

OK. Well thanks for the explanation. Maybe you and the client should sit down and discuss what's happening to prevent this in the future.