Yosemite is causing my virtual game not to work right

I been working inside a virtual game since 2010 when I bought my IMac 27in mid 2010.... Inworldz using a viewer for open sim

everything worked fantastic until I upgraded to Yosemite, since then I can not upload or download textures into or out of the program as I had before..

Inside the viewer program I can take pictures from within the game.. and save them to my heard drive and the second I snap and go to save, it freezes and the game crashes... I can not upload my photos as before to the game so I can work with them inside the game...

nothing I have tried will allow me to use my Mac for my work I now have to pull out my windows laptop to do my work and this is not the way I want to work, I bought my Mac for my gaming in virtual worlds for taking photos of avatars for their own enjoyment which I receive pay...I am a photographer in Second life and Inworldz....

I cant be the only Mac user that needs to be able to upload and download inside a virtual world... HELP....

here is some pics of my computer and a pic of what my game sends on crashing to me (our support team for Inworldz says its not the viewer, its Yosemite....is there any thing I can do??? I was told I can't go back to Mavrick