David – I cannot open files in Windows Exploerer either. My files do open, but I would either have to open them from going to file > open, then selecting my files; or by dragging and dropping from bridge or windows explorer, but in order to do this, I can't have another indesign file open. This happens for any indesign file I try to open.

Eugene – When I tried ctrl alt shift, I get prompted by windows saying that if i wanted to allow bridge to make changes to my computer. I click yes, but then nothing happens.