Just wanted to say that I get this type of error from time to time as well, especially with a client that has about 6 to 8 concurrent OE users regularly. All users have their own IDs and to my knowledge do not use multiple instances.

Not realising that I was not meant to remove the control files, I have always moved BOTH the OEF control files AND the OEF ### files - oops. However, the good news is that moving both has always cleared up the problem for a a good length of time (usually weeks/months). As mentioned at the start of this post, however, the problem does eventually recur.

I believe (and am keeping fingers crossed for you) that not removing the Finder's control files as well was likely the problem but I await Bruce/Barb9's next post with keen interest.

Pete