GoldSrc Game Error: LoadTGA: Only type 2 and 10 targa RGB images supported

This error most likely indicates that you have a damaged file, usually a skybox (but not always).

Since the error message doesn't tell us what file has the problem we can't search for it so we'll have to try a more brute-force method.

Step 1: Rename the External Folders

First thing to try is to rename your game folder temporarily and let Steam create a totally default installation. You do this by exiting from Steam, then go to (adjust for the game you are having problems with):

C:\Program Files\Steam\SteamApps\<account>\counter-strike

and rename the counter-strike folder to this:

C:\Program Files\Steam\SteamApps\<account>\~counter-strike

When you start up Steam and then click on Counter-Strike in the games menu, Steam will quickly create a default installation. Then you can go to a server running the map you were having a problem with and see if you still get the error.

If the problem goes away then you know it's some content in one of your folders.

You can try this same trick of renaming each subfolder one at a time then and see if you can run. eventually you should be able to narrow down the location of the offending file.

Alternately, you can just continue using the default installation.

Step 2: Delete the Local Content

If you still have the problem then you definitely have a bad cache GCF file and you'll need to re-download the content.

To delete the local content, go to the game that is causing you problems, so:

Steam > Games > then right-click on "Counter-Strike" (for example) and select properties.

There in that properties panel is the "delete local content" button

If you are having problems with CZ or CZ Deleted scenes, then you may need to also delete the CS content or even HL content, this is the order:

CS:DS --> CZ --> CS --> HL

Each game in the sequence shown can use a resource that is in the following Game cache.

So if you have a CZ:DS problem and delete that content and it doesn't fix your problem, then delete CZ, then if that doesn't fix the problem, delete CS, and finally delete HL (you may have to D/L HL first completely to delete it).

You will need to download the game content that you delete before you can play (click on the game).