Invalid file name

When i open my Ical, I recieve an "Invalid file name" message box that I assume is an error... I tried to re-install the software, however the "file name error" has persisted through my determination... is there any way to get rid of this...?

The Console is only bringing up a log from 3/30/09 but i found this under 3/28/09

{quote:title=DarkSyDaZ wrote:}

3/28/09 9:43:24 PM iCal Helper[6919] * -[CalPersistentStoreCoordinator createPersistentStore:]: error on adding persistent store: Error Domain=NSCocoaErrorDomain Code=258 UserInfo=0x188390 "Invalid file name." {
NSUnderlyingException = Error validating url for store;
} {quote}