I have installed this mod (new install) and when I try the uninstall_links_manager.sql to uninstall it, there are errors. I can't uninstall it. It gives me these errors:

13 statements processed.
Error ERROR: Cannot insert configuration_key "PRODUCTS_OPTIONS_TYPE_SELECT" because it already exists
Error ERROR: Cannot insert configuration_key "UPLOAD_PREFIX" because it already exists
Error ERROR: Cannot insert configuration_key "TEXT_PREFIX" because it already exists
Error ERROR: Cannot insert configuration_key "IH_VERSION" because it already exists
Error ERROR: Cannot insert configuration_key "IH_VERSION" because it already exists
Error ERROR: Cannot insert configuration_key "IH_VERSION" because it already exists
Error ERROR: Cannot insert configuration_key "IH_VERSION" because it already exists
Error ERROR: Cannot insert configuration_key "IH_VERSION" because it already exists
Warning Note: 4 statements ignored. See "upgrade_exceptions" table for additional details.
Can someone help me fix this?