Apologies to those users still seeing this error. We have been unable to reproduce the problem at all but still have an open problem report against it.
One user, further up the thread, posted a workaround, which is the only one I’m aware of, though it seems that at least one Blackberry JDE plugin users has also seen this problem. In that thread, someone mentioned the possibility that it might only occur for workspaces in a folder that includes spaces in the path name. Could anyone here confirm that?
If anyone can reliably come up with a scenario for reproducing the problem, it would be a great help.