Using Base, Compatibility, Integration and Lighting.

Crash report : http://pastebin.com/2cZzH6Zb

Weird, that class does exist in the jar file. Can you try redownloading the files?

I redownloaded and it still happens. This class is indeed in the jar file and the whole thing does not seem to be corrupted.

I installed the other two components (Mechanical and World) and it now works.

Compatibility has a hidden dependency on World.

After a few tests, I found out that the crash only happens if the World module is disabled.

Applying Simon's solution as well as mine of splitting it works great. See #553.

More info: https://gist.github.com/kenzierocks/7b3a5f08bcf6ca3a8ba6

That's a very well hidden dependency injection
So doing this in PluginTreecapitator.scala should fix it right?

 object PluginTreecapitator extends IPRPlugin
 {
-    override def getModIDs = Array("TreeCapitator")
+    override def getModIDs = Array("TreeCapitator", "ProjRed|Exploration")

     override def preInit() {}

Possibly, I can't say for sure yet.

No, the only solution is to split out the World dependent code and have it register if the World jar is there.

I think simon's solution would work.

Simon's solution does not work as getModIDs is called after the Services$ class tries to create itself and encounters the init method. See https://github.com/kenzierocks/ProjectRed/tree/simons-patch.