I installed TC10 for the 30 day demo. I also have TC8 (registered) installed on WINXP SP3. The weird thing is that the mouse seems to not respond to left or right clicks in the directory tree (especially the list view) even though all other apps seem to work fine. (& TC8 works fine) If I restart the app it works ok for a short time and then goes bonkers. The mouse moves correctly but clicks start to get ignored. (not a mouse issue) Then if I relaunch - it doesn't launch (but all other apps work fine) Terminate the process and all works fine for awhile. Just really weird. To try to help - if I right click in the window when things are weird - it shows "paste/newfolder/properties" instead of the expected right click menu folder.