Rytir_fik, it's pretty simple. You don't have enough inputs to set mixIn 10. Just decrease this value and your transaction will go out.
I did it - decreased the value. I would like to understand how it works. Can I increase the inputs? What the inputs are? I would need some explanation like for baby. :-)
The outputs in question are below the threshold where they get broken up into digit denominations. So you would need to find an exact match of the same amount on the blockchain to mix, i.e. unlikely.