You can unlock the libraries with a free utility called Correct Reference. It searhes through your textures folder and cleans up the references between them and the objects which use 'em. Incorrect file references are the primary cause of file locking in Poser. Once your textures folder is in apple pie order, run the compatibility test again. When you start to use PBooost, run CR every time you install something new. Word of warning, a first time run of CR can take hours.

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