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Restart ROB RUN and Steam, verify the game files in Steam, and check your graphics driver.
Troubleshooting
Match your symptom or error code to Kefir’s troubleshooting steps. The cause of a Compiling Shaders stall is not confirmed here.
Connection · E-0101 / E-0110
The game cannot download startup data. Check that your connection works.
Update · E-0301 / E-0302
Close the game, restart Steam and install the update.
Anti-cheat · E-0501 / E-0502
These codes relate to Easy Anti-Cheat. Launch from Steam, verify the files and check Kefir’s support guide if it persists.
FPS drops only when you move the mouse
If the game runs smoothly while the mouse is still but drops to single-digit FPS when you move it, Kefir suggests lowering the polling rate in the mouse software. Try the same movement again after the change to see if it helped.
Kefir · FPS drops while moving the mouse ↗Your progress is gone after logging in
First check whether your server has wiped and whether you’re signed in to the right Steam account. If neither explains it, send your player name, UID and approximate time of the loss privately to Kefir support. Press Esc to find the UID under your character name.
Kefir · Lost progress ↗