Larian Studios Forums Baldur's Gate III Baldur's Gate III - Technical & Gameplay Problems No mods but being told Gustavdev error for mismatch?

No mods but being told that my Girlfriend and I are unable to join each others parties due to mismatch. She was unable to straight lunch the game either, she found a work around where she can get the game to open directly. We've checked running logs as well as version we are both running the same version. Both of us are on steam. Both of us have re verified our files together. Anyone find a work around for this?

we've played this in 2020 as well together and it worked fine then. Don't know wha'ts going on here.

Just a shot in the dark, but it was recommended to uninstall the Early Access version prior to the full release. You may want to try completely uninstalling and then reinstalling the game, if you didn't uninstall the Early Access version before the 1.0 release.