"Your CD-key is not valid" - HELP!

[Markunator]

I own Battlefield 2 legally through Steam, and I own Project Reality v1.0 through Desura. I was able to play it perfectly well yesterday. Today, however, I was going to play it again and downloaded an update. After it was downloaded, I started the game and tried joining a server, but it told me that my CD key wasn't valid. I tried some solutions I found on these forums, but they didn't work. I eventually tried reinstalling Battlefield 2 and Project Reality, but when I started the former, it told me the same thing that Project Reality told me: "Your CD-key is not valid"! HELP! What am I supposed to do to make Battlefield 2 and Project Reality playable again?!

[Markunator]

Could someone please just help me out here?

[Markunator]

Please? Anyone? I've tried editing the key in my registry, but it didn't work. What am I supposed to do? Do I need to get a new key somehow?

[LITOralis.nMd]

LITOralis.nMd']Allright,
Ive released new version of BF2KeyMan with minor changes based on your suggestions
Please leave feedback if it was helpful for someone

Added:
- Readme,
- Minor key checking for chars

Removed:
- "Random" button

Download: bf2keyman.rar

Option 2:
Get your BF2 key from Steam->Library->select BF2->Right Column>View Key

Open PRLauncher->Support->Keys Tab
Enter your BF2 key.
CLICK APPLY,

test PR.