XSLT: Fix activation sequence (#4017)
XSLT: Fix activation sequence (#4017)

* XSLT: Fix activation sequence

Save first, then activate (and no need for activation queue)

* Add error handling
EduardoCopat/abapGit,EduardoCopat/abapGit,sbcgua/abapGit,larshp/abapGit,sbcgua/abapGit,larshp/abapGit