Originally Posted by AnotherCat
Probably pretty obvious but, just in case not, have you updated SetPoint to the current Windows 8 version (v6.51 64bit)?
I have had no problems with that and Calibre 64, but I can't recall if I had an earlier version of it after first installing Calibre 64 so can't say if earlier SetPoints had an issue in my environment or not.
I have the latest version of Setpoint. I did some experimenting these past two days and I can say definitely that the problem occurs only when my Touchpad T650 is powered on. I have two wireless Logitech devices connecting through their Unifying Receiver (Touchpad T650 and a Trackball M570). The Trackball is new and I was experiencing the Calibre crashes before I bought it, running just the Touchpad. I have had no crashes when I run Calibre X64 with the Touchpad powered off.
I speculate that there is some glitch involving the Touchpad and Setpoint. The Touchpad is a new device from Logitech, so there probably are still a few issues to be resolved with it.
Thanks to all who responded.