Either version 1.0.x, 1.1.x or if from git anything before: https://github.com/ezsystems/ezgmaplocation/commit/b72bf6431abbbddd681f42be1676fa1f038a15c0
Background: templateInit(), ezi18n() and ezx18n() was deprecated in 4.3, as of 4.5 all extensions from eZ have been changed to use the new class based api introduced in 4.3.
Created a new article from the admin interface, where I can see the google map, inserted the post code, it gave me the co-ordinates.
Public website - Nothing is coming up on the page, but I can see all the scripts (javascript) in the scource code being called from ezgmaplocation.tpl.