Hi gwadmin,
I am having a similar issue. I had a 1.8 version of LimeSurvey installed on GoDaddy and recently updated to version 1.9. The errors were so sever and time being an issue in our research study, we created a separate installation of version 1.9 on GoDaddy.
After some manual labor, we were able to reinstate our survey and we too get the error "You need a valid token to participate" but at the beginning of the survey. I send and invitation to participate in the survey and when you click on the survey link in the email, the site tells you the token is invalid.
I've generated several different tokens, sent it to several email address, and even the dummy tokens I create produce this error. The error also occurs when you click on the 'do survey' icon (green wheel) in the token management page...
I need this fixed asap so I'll be doing a lot of digging today. If you were able to fix this, please share! I'll keep you posted on anything I find.
Thanks!
Jacqueline Boccanfuso
Research Associate
Gazzaley Lab, UCSF