"cant use assigment 2.2" ... true ... not an error. Those should have been upgraded to new many many many moons ago.
But if you have those old assigment 2.2 in courses that have not been upgraded, try this:
Enable the old assigment 2.2 plugin (eye dosn't show closed) ... still can't pick it from drop downs in new resources, but does an 'Assignment Upgrade Helper' appear in either Site Admin menu or Course Admin menu? If so, click it and upgrade them.
Other than that ... guess you'll have to 'rebuild' those assignments.