https://forums.autodesk.com/t5/fusion-support-forum/quot-object-is-read-only-quot-when-i-attempt-to-delete-an-object/m-p/5611777#M205332 <P>Ok, I shared the file with you.&nbsp; I tried the compute all Command.&nbsp; Even if you roll the time line back to the beginnning the surface stays on the canvas.</P> Tue, 28 Apr 2015 22:06:12 GMT laughingcreek 2015-04-28T22:06:12Z