My grading drawing will not save. Out of no-where I got a fatal error.

[jvick]

I was adding feature lines to my surface, and tried to move one up, then I got a fatal error. Now the drawing will open on recover, but will not save without crashing.

[pendean]

RECOVER command found problems in your file here, and it erased a bunch of corrupt entities.

I'm using AutoCAD 2019.1.2

[jvick]

But it still crashes after I recover, when I try to save. It also crashes after audit- which finds over 400 errors.

[pendean]

Ways to fix a problem file beyond just RECOVER are listed here https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/AutoCA...

HTH

[s.borello]

28 errors when I ran an audit on your drawing... try Audit and recover... see if that helps.

[jvick]

The drawing will audit and recover. But will not save. The alignments are also not showing up in the toolspace, but I can select them in the plan. Not sure if that gives any clues.