Rated 1 out of 5 stars

As of Firefox 37 (maybe even before), the following functionality no longer works:
- copy as plain text
- remove duplicate spaces
- remove duplicate blank lines

The only thing that is still working is:
- trim space around text (doesn't work on   (non-breaking spaces) through)

I am sorry that you are having issues with the addon. I have just done some retesting on 37.0.2 on windows both with the keyboard shortcuts and with the right-click menu. Every was working as it had been before. That means that either there is an addon conflict somewhere in your setup, or something got corrupted in your install. It could be that a recent update to another addon you have has introduced new options that caused this issue for you.

I recommend that you uninstall/reinstall my addon, and if that doesn't work disable all your addons and re-enable them one at a time (starting with CAPT) testing after each one until you find the one causing the conflict.