AutoCAD 2010/2011/2012 DWG Format

[#1]

I had 5 drawing files, all in the same directory.  They all have the same plot style set calling the same ctb file.

I opened all 5 drawings at the same time and only one of them doesn't tell me the ctb file is missing.  Hit the drop down on the one that could find it and there they all are.  The other four drawings list nothing.

I wound up having to copy everything out of each of the four drawings into new drawing files and re-save them.

How else are you supposed to fix this in the drawings?  It's not some path thing in AutoCAD because every other drawing can find everything just fine.  It's just those 4 drawings.

[#2 · Accepted solution]

Those four drawings were STB based drawing files, you may not have any STB files so when you used the drop down nothing was found.  When you inserted the drawings into another file (which was CTB based) it converted them to CTB.

Next time try the CONVERTCTB and CONVERTPSTYLES commands.

[#3]

I was skeptical, but sure enough, that was it.  I opened the original version of this drawing as we received it from our supplier and it was set up to use a STB.  Typed CONVERTPSTYLES, clicked OK and it fixed it.

It looks like going from CTB to STB you have to use CONVERTCTB first.