So I have been getting a fatal error "INTERNAL ERROR: !dbobji.cpp@8743: eNotOpenForWrite" when I try to export to 2010 CAD.
I have worked out that it happens when pipes are displayed in the profile view.
ANyone have this problem or know of a fix?
Solved! Go to Solution.
Check that none of the layers associated with pipes in profile view are locked/frozen.
Test: try exporting to ACAD 2013 first. Then open that up and export again to 2010.
Credit where credit is due! Give kudos or accept as solution whenever you can.
Decided it would be the same or easier way: save c3d .dwg with proxy images, then open .dwg in plain autocad [, explode proxies and finally remove proxies if it's nessesary].