NPE rebuilding a deployed project.

I keep getting this error after rebuilding a project that I had deployed to a server:

eclipse.buildId=200808150211-nightly
java.version=1.6.0_03
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_GB
Command-line arguments: -os linux -ws gtk -arch x86

Error
Mon Aug 18 13:32:36 CEST 2008
An internal error occurred during: "Updating status for 4.3.0.ga.cp01-200186...".

java.lang.NullPointerException
at org.jboss.ide.eclipse.as.core.modules.PackageModuleFactory$ExtendedModuleFile.getPath(PackageModuleFactory.java:362)
at org.jboss.ide.eclipse.as.core.modules.PackageModuleFactory$ExtendedModuleFile.hashCode(PackageModuleFactory.java:359)
at java.util.HashMap.put(HashMap.java:372)
at org.eclipse.wst.server.core.internal.ServerPublishInfo.hasDelta(ServerPublishInfo.java:454)
at org.eclipse.wst.server.core.internal.ServerPublishInfo.hasDelta(ServerPublishInfo.java:472)
at org.eclipse.wst.server.core.internal.ModulePublishInfo.hasDelta(ModulePublishInfo.java:377)
at org.eclipse.wst.server.core.internal.ServerPublishInfo.hasDelta(ServerPublishInfo.java:442)
at org.eclipse.wst.server.core.internal.Server.hasPublishedResourceDelta(Server.java:1354)
at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob$1.visit(Server.java:194)
at org.eclipse.wst.server.core.internal.Server.visitModule(Server.java:2295)
at org.eclipse.wst.server.core.internal.Server.visit(Server.java:2279)
at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob.run(Server.java:203)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)