haha, I found the problem,....
It seems to be - a kind of - directory-permission problem
it runs perfectly, when ioFTPD and ioZS 2.01 is running in C:\ioFTPD\... Standard-Dir...
(btw.: other zipscripts won't run in my specialpath too.
only jaCheck 0.95 is running perfect)
so forget it...problem solved, THX
PS: GREAT WORK STARDOG, will run this now as ZIPSCRIPT....