My IDE aborts compilation and asks for "version.h" library, where to get it from?

Dude… you are welcome :stuck_out_tongue: But my point was that a little preemptive searching on your part would have resulted in less issues on your part. As per the Welcome Topic that all forums expect new members to read… Stop living in the gimme gimme world and do a little research on your own… then you can ask informed questions :slight_smile:

Just becasue the Blynk library points out the issue doesn’t mean it is responsible for the issue… it doesn’t care if nothing else you use cares or not what you have or don’t have installed, perhaps it needs something from a 3rd party you haven’t properly supplied.