The cannot find phrase is normal, it was just (accidentally) never put into the installer. It isn't a big problem, so the installer hasn't been updated.
There are several reasons why you'd get "No actions found...", most dealing with action permissions. If you have a custom usergroup as your primary group,
this post might be helpful.
Edit the donate link out of the templates (postbit and MEMBERINFO), and if you want to disable donating completely, edit the action in the action manager and set "active" to no. As for resetting points:
[sql]UPDATE user SET uttpoints=0;[/sql]