the attached project (.unicase.dev folder) could not be migrated.

when attempting to start the emfstore, it displayed the error: your model is out of date, do you want to update to the newest version.
migration starts, but fails. the server does not start.

only deleting my local project helped.

stack trace:
bootloader constants: os=win32, arch=x86, ws=win32, nl=de_de
framework arguments:  -product org.unicase.emfstore.emfstore
command-line arguments:  -product org.unicase.emfstore.emfstore -data c:\dokumente und einstellungen\administrator\desktop\unicase_int009\workspace/../runtime-org.unicase.emfstore.emfstore -dev file:c:/dokumente und einstellungen/administrator/desktop/unicase_int009/workspace/.metadata/.plugins/org.eclipse.pde.core/org.unicase.emfstore.emfstore/dev.properties -os win32 -ws win32 -arch x86


error
thu jan 07 17:13:42 cet 2010
application error

groovy.lang.missingpropertyexception: no such property: metamodel for class: step4
at org.codehaus.groovy.runtime.scriptbytecodeadapter.unwrap(scriptbytecodeadapter.java:50)
at org.codehaus.groovy.runtime.scriptbytecodeadapter.getgroovyobjectproperty(scriptbytecodeadapter.java:537)
at step4.run(step4.groovy:79)
at edu.tum.cs.cope.migration.execution.migratorstep.execute(migratorstep.java:110)
at edu.tum.cs.cope.migration.execution.releasemigrator.execute(releasemigrator.java:156)
at edu.tum.cs.cope.migration.execution.migrator.migrate(migrator.java:160)
at org.unicase.emfstore.startup.migrationmanager.migrate(migrationmanager.java:230)
at org.unicase.emfstore.startup.migrationmanager.convertinitialprojectstate(migrationmanager.java:125)
at org.unicase.emfstore.startup.migrationmanager.migratemodel(migrationmanager.java:99)
at org.unicase.emfstore.emfstorecontroller.run(emfstorecontroller.java:108)
at org.unicase.emfstore.emfstorecontroller.start(emfstorecontroller.java:82)
at org.eclipse.equinox.internal.app.eclipseapphandle.run(eclipseapphandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.runapplication(eclipseapplauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.start(eclipseapplauncher.java:79)
at org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:368)
at org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:179)
at sun.reflect.nativemethodaccessorimpl.invoke0(native method)
at sun.reflect.nativemethodaccessorimpl.invoke(unknown source)
at sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)
at java.lang.reflect.method.invoke(unknown source)
at org.eclipse.equinox.launcher.main.invokeframework(main.java:559)
at org.eclipse.equinox.launcher.main.basicrun(main.java:514)
at org.eclipse.equinox.launcher.main.run(main.java:1311)
at org.eclipse.equinox.launcher.main.main(main.java:1287)

