Ok the coins came back, but it happened again trying to send 10,000XDN. Is my wallet broken? I'm recieving XDN from mining just fine.
Transaction hash: B3F4D03AA9880A0141771B1429AC3B6E0ACC67C2C50F77EFB88382DB3383B2FC
Edit: The coins are back...
The main reason of inconveniences with your transaction is size = 35226 bytes.
That is caused by 146 Inputs for your transaction. Please, try divide your transaction in that kind of cases to avoid any issues. In future when XDN will handle thousands of transactions per second Block size limit will be increased automatically.