When building a language with an editor open, the project breaks.
During building, an error is reported that the ctree cannot be found/opened:

org.strategoxt.imp.runtime.dynamicloading.BadDescriptorException: Could not load compiler service provider(s): include\entity.ctree
    at org.strategoxt.imp.runtime.services.StrategoObserver.reportLoadException(StrategoObserver.java:444)
    at org.strategoxt.imp.runtime.services.StrategoObserver.loadCTree(StrategoObserver.java:405)
    at org.strategoxt.imp.runtime.services.StrategoObserver.initialize(StrategoObserver.java:327)
    at org.strategoxt.imp.runtime.services.StrategoObserver.getRuntime(StrategoObserver.java:860)
    at org.strategoxt.imp.runtime.services.StrategoObserverUpdateJob.analyze(StrategoObserverUpdateJob.java:29)
    at org.strategoxt.imp.runtime.services.StrategoAnalysisQueue$UpdateJob.run(StrategoAnalysisQueue.java:83)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.io.FileNotFoundException: C:\Spoofax\Workbenches\Spoofax-inner\Entity\include\entity.ctree (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.io.FileInputStream.<init>(Unknown Source)
    at org.strategoxt.imp.runtime.dynamicloading.Descriptor.openAttachment(Descriptor.java:390)
    at org.strategoxt.imp.runtime.dynamicloading.Descriptor.openAttachment(Descriptor.java:389)
    at org.strategoxt.imp.runtime.dynamicloading.Descriptor.openAttachment(Descriptor.java:374)
    at org.strategoxt.imp.runtime.services.StrategoObserver.loadCTree(StrategoObserver.java:397)
    ... 5 more

and as an effect of that, semantic analysis breaks:

Internal error: strategy does not exist or is defined in a module that is not imported: Definition 'editor-analyze' not found
rewriting failed

This is probably caused by the language/editors being reloaded before the ctree file is created (or visible in Eclipse)?

Since the editor is only reloaded after a build, the project stays broken until a build is executed without an editor being open.

Submitted by Gabriël Konat on 10 December 2012 at 12:58

Probably caused by incorrect build order. Thanks for reporting. r25773 hopefully fixes this.

Ok. This is definitely not fixed. Looks like it’s caused by Spoofax/591.

This is fixed as part of implementation for Spoofax/591, in revision r25773.