Hi,

I've been following bitcoin for about a year and a half now, and I'm happy to see all the attention it's been getting lately.  I've been stuck for months on a problem related to my poor choice to encrypt a wallet that I believe was created from a 0.4.x client using a more recent version.  Attempting to send the coin that's in the wallet results in the error, "Transaction creation failed."  The bitcoin that is stuck in this wallet is now worth a non-trivial amount, so I intend on getting some posting done here and seeing if anyone can help in the tech support forum.