PDFCeator doesn't work as expected when associated with *.eps


PDFCreator doesn't work as expected when it's associated with .eps files.  .ps work fine (i.e. double-clicking on the .ps file causes PDFCreator to open with the file selected for conversion), and if I rename the .eps files to .ps files, that works fine too, but if I associate pdfcreator with .eps files, then the gui comes up but the file hasn't been loaded.

It does work I manually select the .eps file using "Document -> Add", but this is obviously a bit clunky compared to a simple file association!