Hi Martin,
just to make sure, the newest version of comport is in iem/comport/comport right?
"But the result should be the same, the data gets sent anyway, the error is bogus."
Nope, the data is never received by the device. Please note that there are only problems with sending data through comport (the actual message sent is 16 bytes long). I can receive long messages without a problem (sometimes a returned message can be as long as 63 bytes).
" Maybe try sending the bytes one at a time slowly?"
Yes, that works with the ridiculous slow drip/unfold speed of 5 ms between every byte!
Tom