Can't edit master effects!

[Hades]

Hi there, I've loaded up some vst's in my track fx - pressing the edit button opens up the effects rack and i can edit settings like normal..

However when using effects on the master output - the edit button lights up, but no rack appears. The main mixvibes window loses focus too, so it looks as though an invisible window is appearing or something. Please help, this is quite crippling!

Edit: Just thought i'd say i'm using the latest version of mixvibes Producer!

[abitmessie]

are you using the VST that come with Mixvibes or your own
if so which ones are you having trouble with?

[Hades]

I've tried built in effects as well as sugar bytes artillery, and some other various ones. They all load up perfectly in the channel effects rack - but not the master rack.

Also, I can't load a VSTI into a channel. It plain doesn't work... For any vsti I own. Fabfilter one, twin, z3ta, sylenth1 etc.
Is there an option i have to click somewhere?