Host id out of bound id {1} max id should be greater 0 and less than {0}

[Former user]

After I quit a test run, the game started spewing this error on the main screen. Everything else worked fine, but this error kept popping up like 100 times a second.

* Host id out of bound id {1} max id should be greater 0 and less than {0}*

[Henry Smith]

Removing version: 2.1 (automated comment)