I have jghg2.inc from the rar from the modules forum now (but I have already tested with the zips version also). Moreover I have downloaded the ispy from the plugins forum (
http://www.amxmod.org/forums/download.php?id=110) and... no candy, the problem persists (it's exactly the same error).
Johnny, could you check in which file you have the definition of the CS_SetModel, please?
Maybe you have a working version on your HD and you have posted some older stuff on the forum? Could you please check it yourself?
Thanks in advance.