I did something unintentionally, while I was sorting my glyphs, anyway - my tools are all grey/translucent now and I can't change a single thing. "erase tool" is grey, "knife tool" is grey, "elipse" - everything. I basically can't select any of the tools, nor a single dot when I open glyph window and I don't know how to undo what I just did. I quit and restart, but the problem remains.
I attached a snapshot.
Thank you for your help!