Android Question [B4X] XUI Views.b4xlib

You should not save the XUI Views.b4xlib library in the Addional Libraries folder but to the B4A, B4i and B4J internal library folders:
In
C:\Program Foles (x86)\Anywhere Software\B4A\Libraries
C:\Program Foles (x86)\Anywhere Software\B4i\Libraries
C:\Program Foles (x86)\Anywhere Software\B4J\Libraries
<tool> means simply either B4A, B4i or B4J.
Take care not to save an 'old' version !
XUI Views.b4xlib is automatically updated with each new release of a B4X product.