Hi hatzisn,
Thanks for the quick reply.
Yes definitely compiled ok and I saw it download.
I do have a QNAP NAS which syncs files, and it was set to space saving mode, but its been like this for ages and all worked ok. I've switch that off, but it still errors.
Everything works fine in the Arduino IDE.
The only thing I can think of that I did recently was to uninstall the old Arduino 1.8.11 version now that I installed the 2.2.1 - could this have something to do with the error, but then I've reinstall the Arduino V2.2.1 and then B4R - still the error?
Any other idears?
Thanks