I have Windows 7, 64 bit. I recently relented to constant requests to update my Adobe Reader 9.0 (free vers.) to Adobe Reader X. The update erased my former version. Now I can't open any of the .pdf files as it says "the network path was not found." I tried the Repair installation, it just installed Adobe Reader 10.1.1, which I assume is the same as the X version. How do I get Adobe Reader to open my .pdf files?