Paul, I have the retail version of 3.0 installed, modified May 6, 1999 3:00 am. The 3.10 upgrade will NOT install and I've tried both versions. It tells me that the UFTREE.EXE that it finds is not version 3.0 and I have only one version of UFTREE.EXE on my computer. Plenty of RAM, plenty of disk space.Looks like you have a problem here. By the way, I'm not blown away by the fixes, seems to me to be quite a short list considering the time we've been waiting for an upgrade.