I copied that error from somewhere... Here's what mine says:Any reason why you're using a WON Half-Life? This error message is generic and doesn't contain any actual info.
He had this problem well before they updated Half-Life, so it's got to be something else.Well, if there's nothing more specific, I can only recommend taking a look at the pinned thread by Shadi. There are quite a few issues with the recently updated Half-Life version.
/edit: Hm, different forum. Anyway, here's the link: http://forum.esforces.com/threads/155100-bla