When i'm trying to build UBCD, i get the above error popup and have to keep closing the message window
in order to complete the build. the error pops up several times. it happens at the point in the build when the ISO is being created.

Any idea what this error is and how can i prevent it?

James

Hmmm, I've never seen or heard of that problem before. Hopefully someone else on the "staff" here can help you out.