PostgreSQL error when trying to create an extension

Question

ERROR: could not open extension control file \"/usr/share/postgresql/9.1/extension/postgis.control\": No such file or directory

Is what I get when I tr

Answer 1

In C:\Program Files\PostgreSQL\9.4 I found uninstall-postgis-bundle-pg94x64-2.1.5-2.exe. Running that fixed my problem, which was caused by a reinstall of PostgreSQL without first uninstalling, and without installing PostGIS the second time around. That's what happens when you more than one person installing stuff..