Technical Issue steam JA startup switch fix, need help!

[Linktheknight]

hi there fellow players this is a minor issue i keep having but i was wondering if anyone can fix this...so here it goes. whenever i start up ja on steam both multiplayer and single player startups are switched dose anyone know how to fix this?

 

[Puppytine]

There is a "Steam renaming thing" (Error message: "Z_Free(): Corrupt zone header!"): Windows technical FAQ/troubleshooting guide

You can try renaming files manually:
jasp.exe => t.exe
jamp.exe => jasp.exe
t.exe => jamp.exe.

Also, you'd better start Movie Battles using Launcher, not Steam.