Serin woes

[Libretto]

[EDIT]Thanks again, changed the crystal to 10MHz and the extended code works! [/EDIT]

Thanks for the suggestions.

Well I've tried various timeouts (upto a few seconds) with no change in results.

I understand that 9k6 timing on a 4MHz crystal is a little dodgy, so maybe the extra timeout code is upsetting the system. Can't easily go to a lower baud rate as the serial sender is a built unit. But will see if a different version can be found, or even speed up the crystal in my circuit.