TYPO3 Exception 1381590731 

Metadata can only be retrieved for indexed files. UID: "..." 

Occurrence in TYPO3 6.2 LTS with tx_news 

Missing MySQL Tables sys_file and sys_file_processedfile due to MySQL version incompatibility.

Cause in TYPO3 6.2 LTS Beta3 

Copy / Paste images in fileadmin doesn't index the images

Quickfix in TYPO3 6.2 LTS Beta3:

Edit the images you've pasted and save them. This is a quickfix, not a solution

This bug still occurs in 6.2beta5 if you forgot to run the Upgrade Wizard.