I've been using libguestfs-1.18.9 but decided to "upgrade" to 1.19.60. Using Ubuntu 12.04 with the older version installed via source. So I went through the same process with the new version of guestfs sources and got the following errors on 'make install': make[2]: Nothing to be done for `install-exec-am'. make install-data-hook make[3]: Entering directory `/home/skippy/libguestfs/libguestfs-1.19.60/ocaml' mkdir -p /usr/lib/ocaml mkdir -p /usr/lib/ocaml/stublibs ocamlfind install \ -ldconf ignore -destdir /usr/lib/ocaml \ guestfs \ META *.so *.a *.cma *.cmx *.cmxa *.cmi ./*.mli ocamlfind: Package guestfs is already installed - (file /usr/lib/ocaml/guestfs/META already exists) make[3]: *** [install-data-hook] Error 2 make[3]: Leaving directory `/home/skippy/libguestfs/libguestfs-1.19.60/ocaml' make[2]: *** [install-data-am] Error 2 make[2]: Leaving directory `/home/skippy/libguestfs/libguestfs-1.19.60/ocaml' make[1]: *** [install-am] Error 2 make[1]: Leaving directory `/home/skippy/libguestfs/libguestfs-1.19.60/ocaml' make: *** [install-recursive] Error 1 Was I supposed to remove the older version first? And if so - how?