Wow this really is weird. Just to clarify are you saying it was recently you modified the files? They haven't been saved with strange names or files types have they? Which build of poser 11.2 did you install? I know the early builds (279 I think) did delete some files if you already had poser 11 installed, but later builds (I'm using 307 but there are later ones) didn't, but these deletions were in the main poser runtime in programs and the poser 11 content runtime. I'm not a long enough poser user to know about poser 7. Was its content runtime a separate poser 7 content runtime, in a different location from the main poser runtime? But none of this is much help to you, sorry tried to help but baffled!