Reply To: Problem downloading Mayfly libraries

I’m sorry for the hassle. You also cannot use the Arduino IDE’s library manager to directly import the libraries; using “add zip library…” won’t work. You have to follow the longer instructions for manual installation because there are multiple libraries in the same zip. That is, you have to extract (unzip) the libraries.zip file into another folder on you computer and then copy all of the sub-folders into “..\<you>\DOCUMENTS\Arduino\libraries” or where ever your sketchbook libraries are stored on your computer.