you should upgrade the wallet before sending the coins otherwise you will be on the wrong chain.
What is the TX hash?
Vond hem niet terug op de nieuwe chain.
8516173a36a3525b6bf3986178197ed7282d52a55adcae809bc072397e90866e-000
wallet: AGiwHFWACoqxP5eYFf8pwqxaZ93n3DvUhY
Please perform this steps:
1) Backup your wallet
2) Download the new client
3) Start the client with the -rescan parameter
4) Check if the coins are still in the wallet and if the transaction is marked as orphan
If all goes well you should be able to send your coins through the new chain.
Thanks. Maybe we can put your little 1,2,3,4 temporarily in the OP.
http://ams.miningalts.com/address/AGiwHFWACoqxP5eYFf8pwqxaZ93n3DvUhY
It only applies when you used the old wallet after the hard fork to make transactions. I will add it to the OP
Created an FAQ section for such questions