I've had something like that happen what I did was extract it outside of the folder and then put the files back and it worked the next time I ran it. I'm not sure what caused the error you got.

Did you make sure you updated BF2142 first?

Please try this:

1)  Go to: C:\Program Files (x86)

2)  Locate and delete the folder titled First Strike (Don't worry, this is just the launcher, not the whole mod.)

3)  Now go to: C:\Program Files (x86)\Electronic Arts\Battlefield 2142\mods\FirstStrike

4)  Locate the program called FirstStrike_Launcher_0.0.8.1 and run it. It will reinstall the launcher program for you. Once done, go back and see if it now works.

If that still results in the same error, then you could try our latest version of the launcher, which will be available with 1.6 anyway. First you will need to download the new launcher:

http://test.fsmod.com/launcher/FirstStr … .6.6.0.zip

Now, to get you running with the new launcher follow these steps:

1)  Go to: C:\Program Files (x86)

2)  Locate and delete the folder titled First Strike (Don't worry, this is just the old launcher, not the whole mod.)

3)  Remaining in C:\Program Files (x86) create a new folder called FirstStrikeLauncher

4) Locate your downloaded new autolauncher, it is a zip file, you just need to copy it to the folder you created, then extract the contents. The easiest way is once you have copied it to the folder:
C:\Program Files (x86)\FirstStrikeLauncher
Right click on the zip file then choose extract here or similar type wording.

5)  With all the files now in the folder, right click on the file called FirstStrikeLauncher and select 'send to' then 'desktop (create shortcut)'. Voila, the new launcher is insstalled.

Bite my shiny metal Tie Fighter!