I ran into the same problem with my Jenquai Explorer, gating from Freya to Ragnarok. Tried to get in for a few hours but no luck so far. Made another JE character to just test the gate with, and it happened again.
Trying to log back in, I get the following on the command line:
>> Commence Login check
Sending Login packet - connection active
>> Intermediate Login check failed, re-issue sector login.
>> Intermediate Login check failed, re-issue sector login.
>> Intermediate Login check failed, re-issue sector login.
>> Intermediate Login check failed, re-issue sector login.
>> Login check: Login FAILED
login failed, go back to the login screen
Error receiving header on port 3500, error=10004 -- aborting
TCP connection on port 3801 closed gracefully
