Start map script error

Upon map start a welcome message used to be printed on the screen. Now the following error message is printed to the console:

Script error: Bad gamemode for native function

It has been a while since I visited the start map, so I checked some older versions to see when this bug was introduced. It seems something was changed somewhere between 3.37.00 and 3.39.20, but I cannot pinpoint the exact revision.

Oh hahaha. Looks like Small support is dying of leprosy. START uses Small scripting to achieve most of its functions.

Woops. I have a feeling I know what's causing this.