HALion 5 Midi Player Module - Won't Search Files?

Hi, when I right-click the HALion 5 Midi Player ‘Phrase’ window to locate a MIDI file (Macintosh AU version), I get the expected ‘Show in Finder’ option, but it is greyed out and won’t respond - suggestions/hints? Thanks!

Nobody? Too bad, that Midi Player was a major selling point for me in buying the product.