Anyway to change the GM initial load page, before you load game?

I'm locked out - I tried using too big a map with Dynamic Lighting enabled - the warning message indicated it may reduce performance, not that I would be unable to enter game. I can access the side bar &  even 're-join as player' but I always get "Error code: SBOX_FATAL_MEMORY_EXCEEDED" when joining as GM I know I can recover if I can load another map page (then modify/delete the problem one). Thanks in advance

Try creating a  Dummy Account  and promoting it to GM. That account might be able to enter on the default page and fix the settings.

keithcurtis you are my hero, that worked :-) Thanks a million