CITMTA & CIT FixCIT Tools

MTA:SA error code

MTA:SA error CC51

MTA could not load its interface skin.

Code
CC51
Where you see it
A dialog from MTA itself
MTA's own wording
UI-skin loading failure
Family
CC codes

What it means

MTA's own client shows a CC code when something fails before or during a connection: the address, the nickname, a module it could not load, or the connection itself. MTA's own documentation gives this code as UI-skin loading failure.

How to fix it

Work down the list and stop when it is solved.

  1. Repair your MTA installation

    Run the current installer from multitheftauto.com over your existing installation. It replaces MTA's own files without touching your settings.

  2. Check your log if it keeps happening

    Paste the message, or MTA's core.log, into the Fix tool on this site. It runs on your own computer and points at the matching steps.

Still stuck? The Fix tool reads MTA's own log on your computer and points at the matching steps. Nothing is uploaded.

Open the Fix tool

Other CC codes

Where this comes from

Meanings read from these sources on 5 September 2026 and written in our own words here.