I recently purchased a refurbished Wacom Bamboo Tablet and have had problems ever since. When the tablet is plugged in, photoshop freezes. When it isn't, I can no longer use my mouse for pen or brush tools without the program immediately freezing up. Have uninstalled and reinstalled and have tried to revert back to mouse for use with these tools. Have had no success. Can anyone help me figure out how to revert back to just using the mouse?
The mouse and Pen should both be usable. Check the Wacom site for the latest drivers for your tablet.
I installed the latest driver. It didn't help. The mouse is usable for most things; just not the pen, brush, or eraser. I'm wondering if there are glitches due to my recent OS update. Do I have to update Photoshop in order for it to work well with Yosemite?
Yes, MacOS 10.10 has widely reported problems with trackpads and tablets -- using a mouse seems to work well, though.
Some Wacom users have reported that downgrading the tablet driver helps.