i need help i recently d/led the desert combat mod but when i play it i get this

I have desert combat, maybe you should reinstall BF and re download desert combat. Get secure download from download.com

Also do you have legit BF1942?

And you need BF1942 patch before you upgrade, maybe thats why

[Love flying the apache ^_^]

its ligit... and i havent d/led a patch soo thats probly it ty