I had the same issue after upgrading to 10.7 and moving Android and Java directories to new machine. Couldn't get it to work until in used SDK Manager to install android-30, then it worked, even though I didn't change Android.jar in Path Configuration to 30!
thanks very much @Sandman !! months holding off 9.7 (so worry ahah )
Today finally I had time to update to v11, your tips make my life so simple!!
It should be added on tips to update B4A