It often helps to make certain all indexing is turned off, not only NTFS indexing, but also MicroSoft indexing in Office, Word, and so on. Also many Corel programs, like WordPerfect, tend to install a useless little nubbin of crap-code called Corel Versions that tries to hook into any opened file and keeps it locked and "in use" to XP. These kinds of processes (like Poser's own search process for missing files) lock files and directories so PBooost can't move them when needed under NT-based OS's.