Mac user with crash problem

I am a new user of panoweaver, I am runing it on a Mac version 10.10, It crashed frequently at the end of image assembly, and if assembly worked for the same images, it will crash when I close the application. I am using panoweaver 8.6 for Mac and I updated my computer wit the last IOS supplied by Apple, 10.10.

Do I need a fix or is ther parameters to adjust to stabilise the application running on a Mac.

Regards!