Warning: error reading wallet.dat! All keys read correctly, but transaction ....

[bitcoin2-0]

could you explain this warning message from my wallet?

[Rawted]

perhaps a -rescan flag would fix it?

[btchris]

perhaps a -rescan flag would fix it?

It might, although Bitcoin Core is already smart enough to do an automatic rescan if it thinks the corruption is inside a transaction record.

Check your debug.log file (Help menu -> Debug window, then click the Open button), and search for the text "Error reading wallet database" which should have a more specific error message following it, and let us know what you find.