I'm not sure if it's OUYA, but when trying to sideload my game (through the "Make" option), I keep getting the same error message: Invalid UUID (2005).
This is an issue with the developer ID, but I'm sure that I have entered it correctly. (The message started showing up once I started trying to test the transactions).
I'm not sure if this came up in testing or not, but I submitted a ticket to OUYA anyway. Any ideas?