Thanks to both of you. I tried the following and got an error that plpython.dll couldn't be found: D:\postgresql\bin>createlang -U sauser plpythonu mydb Password: createlang: language installation failed: ERROR: could not load library "D:/pos tgresql/lib/plpython.dll": The specified module could not be found. The file spec'd by the error message does indeed exist, though the slashes in windows would of course be the other way around in normal use. Then I tried leaving of the u in plpythonu D:\postgresql\bin>createlang -U sauser plpython mydb Password: createlang: language installation failed: ERROR: unsupported language "plpython" HINT: The supported languages are listed in the pg_pltemplate system catalog. Then I tried something like what Adrian had suggested: D:\postgresql\bin>createlang -U sauser -d mydb plpythonu Password: createlang: language installation failed: ERROR: could not load library "D:/pos tgresql/lib/plpython.dll": The specified module could not be found. It's interesting that createlang knows to look in the peer lib directory for the language file but somehow does not like the plpython that it sees there. I also tried plpython (no trailing u) and had the same error as the earlier experiment. -- View this message in context: http://www.nabble.com/Installing-support-for-python-on-windows-tf2902841.html#a8111635 Sent from the PostgreSQL - general mailing list archive at Nabble.com.