org.eclipse.core.runtime.CoreException: Launch configuration Entity Modeler SQL Generation references non-existing project IntercomAll

I am getting the following exception when trying to generate SQL in  
the entity modeler perspective of WOLips. The project is a nested  
Maven project like this:

IntercomAll
|
\-Applications
| |
| \-IntercomIntranet
| |
| .
| .
| .
|
\-Frameworks
    |
    .
    .
    .

the EOModel in question resides inside the resources folder of the  
IntercomIntranet project. Only IntercomAll, the 'Applications'-folder  
subdirectories and the 'Frameworks'-folder subdirectories are  
actually Eclipse projects.

org.objectstyle.wolips.eomodeler.core.model.EOModelException: Failed  
to create EOF class loader.
	at  
org.objectstyle.wolips.eomodeler.core.model.AbstractEOClassLoader.create 
ClassLoaderForModel(AbstractEOClassLoader.java:55)
	at org.objectstyle.wolips.eomodeler.core.model.IEOClassLoaderFactory 
$Utility.createClassLoader(IEOClassLoaderFactory.java:40)
	at  
org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog.getEOModelCla 
ssLoader(GenerateSQLDialog.java:257)
	at  
org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog.generateSql 
(GenerateSQLDialog.java:297)
	at org.objectstyle.wolips.eomodeler.actions.GenerateSQLDialog$1.run 
(GenerateSQLDialog.java:279)
	at java.lang.Thread.run(Thread.java:680)
Caused by: org.eclipse.core.runtime.CoreException: Launch  
configuration Entity Modeler SQL Generation references non-existing  
project IntercomAll.
	at org.eclipse.jdt.launching.JavaRuntime.abort(JavaRuntime.java:1345)
	at org.eclipse.jdt.launching.JavaRuntime.getJavaProject 
(JavaRuntime.java:1225)
	at  
org.eclipse.jdt.launching.StandardClasspathProvider.computeUnresolvedCla 
sspath(StandardClasspathProvider.java:39)
	at  
org.objectstyle.wolips.launching.classpath.WORuntimeClasspathProvider.co 
mputeUnresolvedClasspath(WORuntimeClasspathProvider.java:81)
	at  
org.eclipse.jdt.internal.launching.RuntimeClasspathProvider.computeUnres 
olvedClasspath(RuntimeClasspathProvider.java:53)
	at  
org.eclipse.jdt.launching.JavaRuntime.computeUnresolvedRuntimeClasspath( 
JavaRuntime.java:1191)
	at  
org.objectstyle.wolips.launching.actions.WOJavaApplicationLaunchShortcut 
.createClasspathURLsForProject(WOJavaApplicationLaunchShortcut.java:133)
	at  
org.objectstyle.wolips.eomodeler.eclipse.EclipseEOClassLoaderFactory.fil 
lInModelClasspath(EclipseEOClassLoaderFactory.java:68)
	at  
org.objectstyle.wolips.eomodeler.core.model.AbstractEOClassLoader.create 
ClassLoaderForModel(AbstractEOClassLoader.java:29)
	... 5 more