Boy, this is my day for apologies.
Sorry, nakst, This was caused by an error I must've caused weeks ago. Apparently, I somehow made "The Unarchiver" my default file compressor, instead of Apple's "Archive Utility"....as seen in this incriminating screenshot: I corrected my defaulted compressor and have opened your plug-in. As you don't provide a VST2 or 3 version, and I primarily use Cubase, I successfully wrapped it in Plogue's Bidule and have run it without issue. It also opens without issue on Logic Pro 10.8.1.
Thanks for the freebee. Again, apologies for the agita.