The problem is 100% with E-Frontier.  If ita cannot save the pathnames correctly in the PZ3 scene file, then there is no way for Vue to know how to import the files.  Fixer, Vue will work with either compressed or uncompressed files.  The problem when using compresses obz/crz files, is that Poser saves the pathnames incorrectly in the PZ3.  For now, the safest thing to do is to use Poser 6 and forget Poser 7 for now.