SignalTap: Greyed out Options

I'm trying to do some configurations in SignalTap, but alot of options are greyed out, and I can't figure out why. I can add nodes, but I can't remove them. I can change trigger conditions for each node, but I can't enable/disable the triggers. Sometimes, almost all of the "Signal Configuration" menu is greyed out, but I've edited those options before so they didn't use to be.

Also, it crashes fairly frequently, not sure if thats related.

I have Quartus II Web Edition 13.0sp1 running on Windows 8.1