Does the Powertab Editor work on windows 8? I sent powertabs to my bandmates, but our other guitarist says that when he tries to open it it says the app won't open on his computer :/
Is powertab not compatible with windows 8?
Any other ideas?

I recently got a new pc with windows 8 and found out I can't open power tabs with guitar pro by by double clicking on it. So I have to drag it in all the time. But gp files always open when I double click them. Hope this helps.
Marty Friedman+Jason Becker=Cacophony
Megaluis, just right click on the .ptb files and select open with -> gp and click always open with this. Should fix that.