Hmm weird Error.
I had Rev 17 Installed, then went to 18, back to 17 cause of 18 had some problems for me, now i try and install Rev 19 with IOS 249 And Base as 57 and it comes back as a Ret=-1 Error, Never had that before.. So whats the problem?
Edit- Eh, i reinstalled 18 then went to 19 and...