erorr

Hey i love the game one i jsut tried to get on and it closed and said fatal error, cant find client.dll but i looked in the folder and it was there? i really wanna play... Anyone know whats wrong?

When I start Milkshape 3d 1.6.6a (registered) it shows me this :(what shall I do:(

please help me!when i am creating a map some kind of erorr showes!help!look: HL caused an invalid page fault in module <unknown> at 0000:645f6c63. Registers: EAX=00000000 CS=018f EIP=645f6c63 EFLGS=00010246 EBX=00000017 SS=0197 ESP=0085abc4 EBP=00000000 ECX=00000000 DS=0197...