All topics relating to this are referring to a file structure similar to "/catalog/includes/languages/ or /catalog/admin/includes/languages/, but there is no folder called catalog or includes. My file structure has the top folder "OM", which is containing Config, Core, Custom, External, Tests and Work folder.
Inside /core/site/admin/languages there is an en_US folder and an en_US.php file. oscomm2.tiff 127.4K 2 downloads I added the downloaded add-on Swedish folder and swedish.php file. Well, nothing happened. I still only have the en_US option when administrating OsCommerce under application->configuration->languages.
I have no clue. Maybe I need to pay someone to fix my online store