I think my postgis is installed because of these three following reasons - but I am not 100% sure. 1) With pgAdmin I created a database. The template I took was the "template_postgis" 2) When I open the Application Stack Builder an get the list of all possible applications to install - under "Spataial Extensions" it is written: "PostGIS 1.5 for PostgreSQL 8.3 v 1.5.3(installed) 3) I followed the instructions from this website to install PostGIS: http://www.gpsfiledepot.com/tutorials/installing-and-setting-up-postgresql-with-postgis/ How can I check if PostGIS is 100% installed on my PC? -- View this message in context: http://postgresql.1045698.n5.nabble.com/import-backup-file-could-not-access-file-libdir-liblwgeom-No-such-file-or-directory-tp5712030p5712345.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general