MacbookPro crashing with Focus 2

Focus 2 & the focus 2 Pro Demo both work fine as long as I export as web or email sized file. But I print large 13” x 19” bird photos. Whenever I try to export my finished photo for use in Photoshop or other editing program or just to save as a jpeg or Raw, the FocusExporter crashes my Mac (according to my crash log). No recovery possible. Completely frozen. Have to shut down and try again, but no luck after multiple tries. If I use their option to export in a reduced file size for web or email, no problem. Except that I need a larger file size!

I have reported this to the MacPhun Support team this week. No reply so far, but I am hopeful. BTW, this does not happen with MacPhun’s Intesify Pro or Noiseless Pro or Tonality Pro, only with Focus 2 and the Focus 2 Pro Demo.

I am only persevering with getting Focus 2 to work, because I like what it does and I find it useful, but this crashing issue is a killer. FYI: I am running Yosemite 10.10.3. No other app or program has ever caused my Mac to crash completely. Usually I can "Force Quit" a bothersome program, but not Focus 2! Come on, MacPhun Support Team give me a clue. Fingers crossed for a quick & easy solution. I want to be able to give this app 5 stars (at the moment, can only give 3 stars).

-Hap about Focus 2