Uninstall B4A. Delete all files from the internal libary folder (C:\Program Files\Anywhere Software\B4A\libraries\)
Make sure the old folder is empty
Install B4A again.
Looks like you have an additional library xml in the internal libraryfolder.
jhscore is not a internal library and no file with this name should be in the internal library folder.
PS: If you updated from a version <12 then you have to install a new SDK. You already did that?