Sorry, I know it wasn't in the screen shot, but was in my downloads folder from late last year so yes I did download it. I have cleared out the additional libraries folder so maybe forgot to re-add it.
Anyway, I have added it again, and have it checked in this project. Now getting this error:
"
B4A Version: 7.80
Parsing code. (0.00s)
Compiling code. (0.12s)
Compiling layouts code. (0.00s)
Organizing libraries. Error
The directory is not empty.
"