I'm having trouble getting my mod to work, and apparently it has to do with the languages of the TXT_KEY defines. The weird thing is that it's talking about Language_zh_CN. Whatever that language is, I am only using English, so there is really no reason at all for this to appear in the database.log: Code: [18374.702] no such table: Language_zh_CN [18374.702] In Query - insert into Language_zh_CN('Tag', 'Text') values (?, ?); [18374.702] In XMLSerializer while updating table Language_zh_CN from file Localization/IGE_ZH_CN.xml. [18375.841] columns Language, Tag are not unique [18375.841] While executing - 'insert into Language_en_US('Tag', 'Text') values (?, ?);' [18375.841] In XMLSerializer while inserting row into table insert into Language_en_US('Tag', 'Text') with values (TXT_KEY_PROMOTION_TIGHT_FORMATION, Civilopedia entry, ). [18375.841] In XMLSerializer while updating table Language_en_US from file newpromotions.xml. [18375.856] columns Language, Tag are not unique If I remove the Language_en_US rows completely from the xml file, I get no error. What could possibly be causing this?