I just copied the new files on to my webspace. When trying to access Piwik again, I click on “Upgrade Piwik”, then I get this message:
Error trying to execute the query 'DROP INDEX index_idaction ON
The error was: SQLSTATE: Syntax error or access violation: 1091 Can’t DROP ‘index_idaction’; check that column/key exists
The screen with the “Upgrade Piwik” button says “upgrade from 0.4.2 to 0.4.5” - I am not 100% sure, but if I remember correctly, my previous version was 0.4.1 and NOT 0.4.2
Can anyone help me with this one?