For anyone else:
I got a NullpoingterException in at VFS.getChild() when starting JBoss (sadly lost the stacktrace)
This was due to that I was importing spring resources from a folder that didn't exist (using a wildcard as in folder/*.xml)
resources.addAll(getVFSResources(urls.nextElement(), subPattern, pathMatcher));
resources.addAll(getVFSResources(classLoader.getResource(rootDirPath), subPattern, pathMatcher));
return resources.toArray(new Resource[resources.size()]);
This getVFSResources(urls.nextElement(), subPattern, pathMatcher) returned null which later through the exception when accessing the URL
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