@melott
If you started with IBrowse 1.x, then you need 2 key files for v2.4 to work. IBrowse1Key & IBrowse2Key, first is the IB 1.x key, second is the IB 2.x key.
I know an IB beta tester & a lot of progress is being made on it, just hope we have another 2.x update before 3.0.
Other then that, the situation sucks.
