I know that zBlock disallows the "wait" command. Unfortunately, EventScripts relies upon that command to be able to function properly. I believe there is a way to get zBlock to allow the command, but I do not know exactly how to do it myself. If you find out, please share so that we can point people to it in the future.
This is something you'll need to do as well:
viewtopic.php?f=70&t=1201Satoon