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Fixed... for me at least Had the same problem SPFQNOTIFY_COPYERROR when trying to inject ATI Radeon video drivers into my Windows 7 x64 mounted WIM file It stated that the source file was not present uppon closer examination.. the error message stated that it could not find blahh.dll but there was a blahh.dl_ (the compressed version of blah.dll) Fix Fixed it by downloading/installing 7-zip selecting all files in the drivers directory in the Explorer file browser (*.dl_, *.ex_...) which are individually compressed right clicking and choosing "extract Here" 7-zip was smart enough to decompress the files and rename them properly ...Example. blahh.dl_ decompressed and became blahh.dll, blahh.ex_ decompressed and became blah.exe I tried injecting the drivers again and it worked this time without error