"Local Charts Could Not Be Saved"

I am constantly getting this message, and have been for about two weeks:

"Local Charts Could Not Be Saved
The local charts database could not be saved. This may be an indication of corruption. See the log file for more information."

The log file says this:

"[Jan 19, 2012 00:00:07 -0800]-[ERR] failed to save persistent db (Error Domain=NSCocoaErrorDomain Code=1560 UserInfo=0x19818670 "Multiple validation errors occurred." -- (
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x19817cf0 "items is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x198162c0 "items is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x19817a70 "sessionAliases is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x19818110 "items is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x19816b60 "items is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x19816e60 "items is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x198171b0 "sessionAliases is not valid.",
Error Domain=NSCocoaErrorDomain Code=1550 UserInfo=0x198185c0 "items is not valid."
))"

I have reinstalled iScrobbler twice and Growl once. My iPod just plain won't scrobble anymore. Any assistance would be appreciated.