Since upgrading from DSpace 1.6.2 to 1.7.1 this morning, we are getting the 
following error message multiple times in our dspace.log file:

2011-05-05 11:36:19,373 ERROR net.sf.ehcache.store.DiskStore @ cocoon-ehcache 
Cache: Could not flush elements to disk due to null. Continuing...
java.lang.NullPointerException
        at 
net.sf.ehcache.store.DiskStore.notifyEvictionListeners(DiskStore.java:1277)
        at 
net.sf.ehcache.store.DiskStore.evictLfuDiskElement(DiskStore.java:1206)
        at 
net.sf.ehcache.store.DiskStore.writeOrReplaceEntry(DiskStore.java:727)
        at net.sf.ehcache.store.DiskStore.flushSpool(DiskStore.java:703)
        at 
net.sf.ehcache.store.DiskStore.throwableSafeFlushSpoolIfRequired(DiskStore.java:671)
        at 
net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:640)
        at net.sf.ehcache.store.DiskStore.access$900(DiskStore.java:68)
        at 
net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1110)

Any idea why I'm getting this error message and how to fix it?

Thanks.

--Jim

================================================
Jim Coble
Core Services Technical Lead and Program Coordinator
Information Technology Services
Perkins Library
Email: [email protected]
Voice: 919-660-5974  Fax: 919-668-2578
Box 90196, Duke University
Durham, NC 27708-0196
================================================



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