Sorry to freak out like that

Well I have a problem that I do not understand. I installed SP:WaW and I get the dreaded vid998.smk problem. I can play the first time I run SP:WaW after installation but every time I run it afterwards, 'Vid998.smk not found. Program aborting'
Vid998.smk is in my snd\stream folder. I tried copying it to the main folder. Same thing.
What am I doing wrong?