The sv.tab for the translation into Swedish distributed in http://experimental.[ simutrans [dot] us (site down, do not visit) ]/simutrans-experimental-config.zip is the file for pak128.Britain, not for experimental.
Oops - thank you for that! The correct version can be downloaded at Simutranslator. I am just re-uploading a corrected configuration file now. Thank you for your work on the Swedish translation - most kind :-)