Thank you agraham and Erel for looking at it.
It was my own mistake
I have too many B4A installations, and I installed B4A 2.70 over an old installation (bad idea). The old installation had some old libraries in it which conflicted with my Additional libs.
I think I should delete the Libraries folder although more of the new libraries (Core etc) are overwritten by the installer so they will be okay.
Thanks again