Yes, I changed permissions to 777, but still no change. If I try running TaskUnifier a second time (with or without the permission changes) I get an error "Settings file not found. A default settings file is loaded". After clicking "OK" it closes and nothing else happens. Nothing is ever created inside the ~/.taskunifier folder.
I'm definitely interested in some Toodledo / Freshbooks integration. If you are still working with this and/or can provide any details, I'd be glad to pickup and run with it.
I also tried installing on Ubuntu 10.10 (fresh install) and it closes after account creation. I don't have anything in ~/.tasknotifier, but the folder is created. Maybe it is a permission error.