Flash Pro CS6 crashes from Command-C or Edit > Copy
Hello, my Flash Professional CS6 keeps crashing when I use the Copy command! It crashes when I copy a vector or shape. If I restart the program, I can paste what I had copied that caused the crash, but it crashes again next time I use Copy. It doesn't always crash, and sometimes I can copy many times in a row, but it usually crashes the first time I Copy, each time I start Flash. It wont crash if what I'm copying is text. I'm on Mac Sierra, and this does not happen if I start the computer in safe mode. I've tried reinstalling Flash and cleaning out any purgeable memory including caches and PRAM and stuff. The problem is easily repeatable. Any advice would be awesome please, thanks for reading!