Copy/Paste Causes "Crash"

Hi! Although new to this, I seem to be really taxing myself, and maybe the program which is taking a lot of pushing from me, and it is really responding well as a beta(?) product. Easy to use and I think will be wonderful basic music notation and printing software which is all I'll ever need.

Just FYI, I have noted both days I have used the program that when right clicking something to cut, copy, or paste it always (I think) crashes the program, so I don't do that anymore. I've occasionally had it happen when using the Edit menu, but that seems to be more reliable. My last crash just now occurred when attempting to copy a slur from one group of notes to another using copy and paste from the Edit menu.