Errors Saving Entries
Sounds like something may be corrupt in your /app folder... I'd recommend performing a manual update to try to fix the problem.

If you are still experiencing this issue after performing the manual update, I'd recommend contacting Pixel &amp; Tonic directly, to report this as a bug.

You can email them at support@buildwithcraft.com, or use the "Send a message to Craft Support" widget on your dashboard.