Yes, the first thing to check is whether you have anything running "as Administrator". It can cause all sorts of bizarre things. I am unfamiliar with the details of how STI and Scitech work together... is this an older mount? I thought the SciTech stuff was replaced by Planewave's in-house software several years or more ago. Anyway, check the Compatibility settings (right click the ex and all shortcuts, one at a time, Properties...). Make sure none of the compatibility checkboxes are set. Beyond that I might not be able to help.