Premiere Elements has been running OK for a couple of years, had to replace C drive. After reloading Premiere Elements 4 I get the following error (Vista).
?resolveEntity@DefaultHandler@xercesc_2_2@@UAEPAVInputSource@2QBG0@Z could not be loaced in the dynamic link library xerces-c_2_7.dll
BTW, when you replaced your C drive, you didn't just make a copy of the disc's files and copy them to the new drive, did you?
This often doesn't work. It's a much better idea to re-install your software after you've installed the operating system. Otherwise, problems like you're describing are pretty common.