[QUOTE=hellreturn;222922]Enable it and problem will be fixed.[/QUOTE]If you want to avoid all the lags, the bugs, the kicks and the [noparse]****[/noparse] that sv_punkbuster 1 will bring whit it, a small explanation why this error occurs and how to fix it:
The simple reason is, that all the clients that do have an unknown/empty GUID dont have their client-PB enabled. This can ONLY be fixed client-side on a server that has PB disabled ( a server with enabled PB will tell every connecting client to enable his PB ). So tell all those guys to enable their PB. This can be done very easily by starting your Game (client-side) with the parameter “+set cl_punkbuster 1”. Add it to the shortcut path or create a Batch.
Unfortunately, it’s mostly those guys that do not read the chat who have their PB disabled. So I wish you luck to explain them how to enable it. 