"Could not resolve module"

I'm Felix Demuynck and I used Elysium in Eclipse in order to make my piano 
sheets. But after the last update, I was not able anymore to begin a Lilypond 
project. I've already done a re-install of Eclipse as well as Elysium and I 
tried to figure out what the problem is but I couldn't find it.

This is what shows up in the Error Log - Exception Stack Trace:

org.osgi.framework.BundleException: Could not resolve module: org.elysium.ui 
[498]
  Unresolved requirement: Require-Bundle: org.elysium; visibility:="reexport"
    -> Bundle-SymbolicName: org.elysium; bundle-version="0.5.0.201412261358"; singleton:="true"
       org.elysium [496]
         Unresolved requirement: Require-Bundle: org.eclipse.xtext.generator; resolution:="optional"
         Unresolved requirement: Require-Bundle: org.eclipse.emf.mwe2.launch; resolution:="optional"
         Unresolved requirement: Require-Capability: osgi.ee; filter:="(&(osgi.ee=JavaSE)(version=1.7))"

    at org.eclipse.osgi.container.Module.start(Module.java:434)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1561)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Original issue reported on code.google.com by harmathdenes on 8 Mar 2015 at 9:46
thSoft / elysium

"Could not resolve module" #62
