Just purchased (downloaded) and installed WD6, launched it, clicked on affiliate program check box, then went to open an existing WD5 file. Gives me Serious Access Violation exception at 0x0000000, then error No 6b86e8f9-1e20-49e2-b6a2-1611dc4af0ae. I cannot open any WD5 web file. Is this an installation problem? Do I need to uninstall WD5?