Hi,
Can you save the options (Options->Backup options to file) and send it to me at jostein@yourdyno.com? I will check.
In the meantime if you're in a hurry, you can exit YourDyno and delete this directory: (navigate with a file explorer):
%localappdata%\Fonneland_Engineering
Then restart YourDyno. It will have fresh options.
Please send me the saved options file first, so I can fix this for the next release.
problem solved!!!! i put the usb in a different port on the pc than where it was the first time while installing yourdyno. I deleted the usb/com port driver manually and the yourdyno software. disconeccted yourdyno and installed yourdyno again an put the usb back and it worked again. something went wrong with te usb i quess. i use windows 10
the error pops up when you select rpm curve. i put it out and the error was gone. I did a gear ratio setup with the tacho and now the error stays away