[postgis-users] Error with ST functions

[Sandro Santilli]

On Thu, Nov 19, 2015 at 05:53:47PM +0100, Lorenzo Bottaccioli wrote:
> SELECT extname, extversion from pg_extension;
>  extname | extversion
> ---------+------------
>  plpgsql | 1.0
> (1 row)

[...]

> POSTGIS="2.1.2 r12389" GEOS="3.4.2-CAPI-1.8.2 r3921" PROJ="Rel.4.8.0, 6 March 2012" GDAL="GDAL 1.10.1, released 2013/08/26" LIBXML="2.9.1" LIBJSON="UNKNOWN" RASTER

So not via extension.

Was this database upgraded from a previous version of PostGIS or
installed new ? Did you build PostGIS yourself or installed from
packages ?

The point is that the install is broken
(either by how you got there or by subsequent tampering).

--strk;