[Solved]I cannot switch weapons

Recently i re-installed Modern Warfare 2 for AlterIW. The problem is i cannot switch to my secondary weapon. I tried to rebind it to other keys but nothing works.

I found a program which might could fix it but it needs the config_mp.cfg file for that.
If anyone could be so kind to tell me how to fix this OR upload his config for me.

Just delete your config and then re-bind it..

That's the problem....I don't have the config file and rebinding does NOT work.

Delete cache.XML and restart..

it's in your player folder btw if you couldn't find it

I know that, it's not there.

delete caches.xml and cache folder
run iw4mp.exe and than it should be there play a game first

Fixed it! Thank you.