error message

Just installed autosave 5.x-3.1. I'm getting this error message when trying to accessing an cck edit form. (I don't get this error with regular page and story nodes, only with my custom content type).

user warning: Table 'ideasite.autosaved_forms' doesn't exist query: SELECT form_id, serialized, timestamp FROM autosaved_forms WHERE form_id = 'idea_node_form' AND path = 'node/48/edit' AND uid = 7 in C:\xampp\htdocs\ideasite\includes\database.mysqli.inc on line 151.