player.cs.dso not being looked for in build - LOGGED

After running a build to make a client installer all of our .CS files are compiled which is great however the player.cs.dso is not being called, our character won't animate.
Should we put player.cs in the directory manually the little bugger animates.

Where is this cal being made or is there another issue we have overlooked.

It's important to note that we actually use a different name than player.cs at this stage (However there are no issues when the uncompiled .cs).

I know it's probably just a simple call somewhere but for the life of me I cannot find it.

Regards