Critical "Encountered an improper argument." dreamseeker freeze/crash/disconnect on login

[bf_taka]

Any way I could get some help with this? I don't want to nag but this is completely preventing me from playing on Goonstation. I tried deleting my Documents/BYOND/ folder (which made BYOND forget my account data, made me re-download resources, etc.) and try logging in after that but I still got this error. I also tried logging in with a different account again and still got this error.