This is an issue caused by Joomla and the only way to fix this is to manually clean up your system. To clean up your system take the following steps:
- Delete all references in the jos_extensions table where element is com_csvi. Replace jos with your own prefix. Find them with this command:
SELECT * FROM `jos_extensions` WHERE element="com_csvi"
- Delete all references in the jos_assets table where name is com_csvi. Replace jos with your own prefix. Find them with this command:
SELECT * FROM `jos_assets` WHERE name="com_csvi"
- Delete all references in the jos_menu table where title is like com_csvi. Replace jos with your own prefix. Find them with this command:
SELECT * FROM `jos_menu` WHERE title LIKE "COM_CSVI%"
- Now install CSVI again as outlined in the Install CSVI in 5 steps tutorial.