Teekay your suggestion did work but when I tried to open the machines the game crashes so the mod needs both mod_ZZZmissile.class files. Somehow the name need to be changed and also when I added the new ic2 file to the ic2.jar forge didnt like it.
I'm sorry that it doesn't work. If you can wait a few more days then I'll post an updated RocketScience which is more compatible and SMP(!). I'm hardly working on it 
Greetz,
TeeKay4711
I'm not trying to be impatient but has anyone fixed the wrong name error with forge modloader. I have tried to fix it but I cant get it to work.
Hello,
that problem is possibly caused due to the fact that there are 2 different mod_ZZZMissile.class files in the distributed jar. Just try to delete one. If that fails, try to delete the other one. That should possibly solve the problem.
greetz
TeeKay4711
Hello ProfessorFalken,
have you integraded the ic2-energynet-patch which comes with RocketScience into your IC2-jar? That might be your problem.
I'm currently working on rewriting essential parts of RocketScience. If I have a working SMP-Version (which is on my topmost-todo-list) I'll share my work with interested people.
TeeKay4711
Woot...
I just started to decompile the mod for myself and just having the runnable source code in my hands. Then i came here to inform you then i saw that the original source is just released. Thanks
So, the big question now (at least for me) is: Who will pickup and continue this project?
cya
TeeKay4711
Edit: I'm willing to continue the RocketScience Mod. I'm not a Java/Minecraftmodding noob I'm also not a pro. If there is anybody with a greater modding/java skill as me who wants to continue this project I will not be angry and/or sad ;-).
I've spend a lot of hours in decompiling the mod and I'm in the process of understanding what is going on under the hood.
