Surface Associativity broken, WBLOCK fixes it

[Anonymous]

Hi, 

I was using SPLINE + SWEEP to create associative surfaces, they were working fine and following the spline when I edited it. Suddenly that stopped working!

I found out that when I WBLOCK the entire drawing into a new file, it works again.

Since I have a lot of custom UCS and view ports saved, I would like to keep the file as is, and fix the associativity!

I have compared all variables with SETVAR ? and couldn't find a difference - what else could affect the associative surfaces, so that they don't follow on the one file, but do follow in the wblocked file? (SAME OBJECTS!!)

Thanks

[cheryl.buck]

Hi @Anonymous,

Welcome to the AutoCAD Forums Community! 

Most commonly when this occurs, it is due to some sort of base level file corruption.  AutoCAD AUDIT, PURGE, and -PURGE for Regapps can find a certain amount of this, as related to file content, see the following Autodesk Knowledge Network article: 

How to repair corrupt AutoCAD files

Please let me know if this helps.

Use the Accept Solution button to mark any posts that provide the answer or solution.

Likes are always welcome.

All the best,

[Anonymous]

Hi @cheryl.buck 

sadly this does nothing 😞

Could there be errors logged somewhere when I move the spline? Is there some error log to enable?

The interesting thing is deleting everything and putting back everything via copy from the working file also does not solve it.

Attached is the file with everything deleted except 1 spline and the corresponding surface, that doesn't want to move!