If you want to know/change the type/creator of an application on the Mac, the BEST tool for the job is "More File Info". It conflicts with nothing and works easily, reliably and at ten dollars shareware - well, there's just nothing more to say. You've GOT to have it (and no I didn't write it) :-) It's available at: http://hyperarchive.lcs.mit.edu/HyperArchive/Archive/gui/more-file-info-cmm-22.hqx