I haven't had a chance to work on it yet, but based on the error logs, it seems as though your permissions on the campaign have gotten lost. Here's something to try:
Click on the edit link for your campaign description. This will bring you to your campaign info screen. Don't change anything (unless you want to) and just click save.
This should re-set your permissions on the campaign. Then try re-sending the invitation.
Comments
Click on the edit link for your campaign description. This will bring you to your campaign info screen. Don't change anything (unless you want to) and just click save.
This should re-set your permissions on the campaign. Then try re-sending the invitation.
I hope this helps.