State is not created anymore

In order to investigate CONCERTO-17 I tried to replicate two xwiki on the same machine (http://concerto.xwiki.com/xwiki/bin/view/Main/Tutorial)

When I ask the first Concerto to create a new state I get this:

16 Apr 2009 17:27:20,983 [5825185@qtp0-6] INFO org.xwoot.xwootApp.XWoot3 = XWC1 end of synchronize From XWiki To Model (false)
16 Apr 2009 17:27:20,984 [5825185@qtp0-6] INFO org.xwoot.xwootApp.XWoot3 = No changes in the model => No changes done in the xwiki.
16 Apr 2009 17:27:20,984 [5825185@qtp0-6] INFO org.xwoot.xwootApp.XWoot3 = XWC1 : Synchronising OK.
16 Apr 2009 17:27:20,985 [5825185@qtp0-6] DEBUG org.xwoot.xwootApp.XWoot3 = XWC1 : Creating state.
16 Apr 2009 17:27:21,048 [5825185@qtp0-6] ERROR org.xwoot.xwootApp.XWoot3 = XWC1 : Problems creating the XWoot state.

java.io.IOException: Failed to zip files: (class java.io.FileNotFoundException) /Users/fm/Temp/xwc1_data/xwoot/stateDir/antiEntropyState.zip (No such file or directory)
at org.xwoot.xwootUtil.FileUtil.zipFiles(FileUtil.java:464)
at org.xwoot.xwootApp.XWoot3.updateState(XWoot3.java:1298)
at org.xwoot.xwootApp.XWoot3.computeState(XWoot3.java:1222)
at org.xwoot.xwootApp.web.servlets.StateManagement.service(StateManagement.java:168)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)