PDFPreview

Problem: When the LaTeX Typeset & View command finishes it opens a file requester/crashes/other.

Solution: Likely the Adobe reader has taken over PDF viewing in browsers (which include the output window in TextMate.) See this post about how to disable it.

Problem: I am using Panther and thus cannot see PDF files in the output window.

Solution: Install Schuberts PDF Browser plug-in.