I just tested it and it works fine (although the low level fear spell for a Necro appears to be level 2, not level 4).
The only thing that springs to mind as why it may wear off straight away is if you don't have a .map file for the zone you are in, in your server Maps folder, or if it is the wrong .map in the case of zones that have multiple versions (Nektulos, Lavastorm).
You can get a lot of serverside .maps from
http://code.google.com/p/eqemumaps/ but for newer zones you may have to build your own using
http://code.google.com/p/projecteqem...8.rar&can=2&q=