org.metaborg.core.MetaborgException: Creating outline failed
	at org.metaborg.spoofax.core.outline.OutlineService.outline(OutlineService.java:80)
	at org.metaborg.spoofax.core.outline.OutlineService.outline(OutlineService.java:1)
	at org.metaborg.spoofax.eclipse.editor.EditorUpdateJob.outline(EditorUpdateJob.java:319)
	at org.metaborg.spoofax.eclipse.editor.EditorUpdateJob.update(EditorUpdateJob.java:223)
	at org.metaborg.spoofax.eclipse.editor.EditorUpdateJob.run(EditorUpdateJob.java:130)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: org.metaborg.core.MetaborgException: Failed to load JAR
	at org.metaborg.spoofax.core.stratego.StrategoRuntimeService.loadJars(StrategoRuntimeService.java:171)
	at org.metaborg.spoofax.core.stratego.StrategoRuntimeService.loadFiles(StrategoRuntimeService.java:154)
	at org.metaborg.spoofax.core.stratego.StrategoRuntimeService.createPrototype(StrategoRuntimeService.java:133)
	at org.metaborg.spoofax.core.stratego.StrategoRuntimeService.runtime(StrategoRuntimeService.java:69)
	at org.metaborg.spoofax.core.outline.OutlineService.outline(OutlineService.java:71)
	... 5 more
Caused by: org.strategoxt.NoInteropRegistererJarException: No STRJ InteropRegisterer classes found in JAR files: [Ljava.net.URL;@214a16fe:file:/C:/Users/Daco/Documents/relations/relations/target/metaborg/stratego-javastrat.jar
	at org.strategoxt.HybridInterpreter.loadJars(HybridInterpreter.java:295)
	at org.metaborg.spoofax.core.stratego.StrategoRuntimeService.loadJars(StrategoRuntimeService.java:169)
	... 9 more

Eclipse: org.eclipse.platform.ide 4.5.2.M20160212-1500
Spoofax: org.metaborg.spoofax.eclipse 2.0.0.20160408-132736-master
System: Windows 10 amd64 10.0

Works fine on OS X.

During the language build I get at lot of the following warnings, not sure whether these are related.

11:31 | INFO  | stderr                         - [ strj | warning ] Found more than one matching subdirectory found for 'runtime/editor'!
11:31 | INFO  | stderr                         -           ["C:\\Users\\Daco\\Documents\\relations\\relations\\lib/runtime/editor","C:\\Program Files Custom\\spoofax-win32-x86_64-20160411\\plugins\\org.metaborg.meta.lib.analysis.eclipse_2.0.0.20160408-132736-master\\target\\unpacked\\latest\\trans/runtime/editor"]
11:31 | INFO  | stderr                         - [ strj | warning ] No Stratego files found in directory 'C:\Users\Daco\Documents\relations\relations\lib/runtime/editor'!

Submitted by Daco Harkes on 11 April 2016 at 11:38

This is still an issue in stable.

Eclipse: org.eclipse.platform.ide 4.6.0.I20160606-1100
Spoofax: org.metaborg.spoofax.eclipse 2.0.0
System: Windows 10 amd64 10.0