Complex machines with voltz?

[svenerator]

I'm relatively new with voltz, and I'm trying to get the complex machines mod to work on my server, when I put the .jar file into the mods directory and when I launch the server it crashes. So my question is, is it even possible to have different mods? Or am i doing something wrong, the install guide said to put .jar file into the mods directory, and it also support servers apparently.

Thanks in advance