This just happened to me right now, when I entered my username and password and logged onto my account, the screen was blank. I went in IRC Webchat and asked why this happened, they said I should try logging in about 5 more times and that worked, but I seriously don't want to have to keep doing that every time I logon to Transformice.
I really don't know if this is a bug, and I got a standalone too.

Define "the screen was blank." Was the spot the username and password was entered go blank? The entire screen go blank? Or what?

oo, i've stated this in a different forum too, that after putting a password on my spawn room and dcing (before the User connected bug) with a friend still in the room and then me trying to log on, the screen was blank. is that a possibility to your problem?
actually, lemme test this with a friend right now
yeah, i just tested it.

Mikurutastic a dit :

Define "the screen was blank." Was the spot the username and password was entered go blank? The entire screen go blank? Or what?

No, when I logged into Transformice the login page was normal, but when I logged in the Transformice screen was blank. I waited for like 2 minutes and nothing happened. But I think it stopped now.

Hixed a dit :

oo, i've stated this in a different forum too, that after putting a password on my spawn room and dcing (before the User connected bug) with a friend still in the room and then me trying to log on, the screen was blank. is that a possibility to your problem?
actually, lemme test this with a friend right now
yeah, i just tested it.

I think so, I was playing with my friend Larenwa collecting cheese (just me and her), so I went to refresh then whe I logged in the Transformice screen was completely blank.

[Moderator] Please don't double post! Use the Edit button under your avatar instead.

usually, relogging should fix it, but if it doesn't fix itself then something else might be the issue, try doing random stuff such as clearing the cache, clearing the local flash storage... any further issues keep reporting it here.