Every time I am working with Photoshop CC (newest version) on my Macbook Pro (almost 1 year old) Yosemite 10.10.2 my whole Mac is freezing and I can't do anything but start it new with the power switch. Please help!
Applications cannot shut down, reboot, or freeze an entire system on modern OS versions. The only things that can shut down, reboot, or freeze an entire system are OS bugs, bugs in low level drivers, and defective hardware.
By far, the most common cause of this that we have seen is defective RAM.
But MacOS 10.10 does have a number of low level bugs that Apple is still working to solve. So was your system freezing when running a stable version of MacOS, prior to installing MacOS 10.10?