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MTA:SA launcher code

MTA:SA error CL31

A GTA file could not be opened.

How to fix it

  1. Restart Windows and try again

    Close your work, restart Windows and try MTA again. If the error comes back, note the file name it shows.

    Source: MTA help

  2. Repair or reinstall GTA

    If that game file still cannot be read, repair or reinstall GTA from its trusted source. Keep your savegames safe. Do not use modified all-in-one game packs.

    Source: MTA help

  3. Start the repaired game, then MTA

    Start the repaired game and then MTA before you change anything else. If the same file still cannot be opened, ask MTA support and give them the file name and the complete error.

    Source: MTA help, MTA forum

These are the steps of the guide CL31: a GTA file could not be opened.

Still not fixed? Copy the whole message, not only the code, and check your log in the Fix tool. It is read on your own computer.

About this code

Another program holding the file, or a damaged game installation, are the usual cases.

CL codes come from MTA's launcher, before the game starts: installing an update, finding GTA, loading MTA's own files or starting gta_sa.exe. MTA's own documentation gives CL31 as GTA file-opening failure.

Where this comes from

Read on 5 September 2026 and written in our own words here.