Dear forum,
I am using LimeSurvey 1.71 and i am quite happy with this fantastic software!

Nevertheless, I have some problems to understand the way of running a survey twice, if users have to register themselve:

In My Survey, users have to register (with their name and email-adress), then they get an email with a valid token, which was generated.
Using the link in the email once works really great.

I do understand, that clicking the link more than one time (after a survey was completed, have to fail since the token is already used
"The token you have provided is either not valid, or has already been used."

So I thought, it could be possible to register more than one time with the same name and email-adress to receive an new email with a new token.

Unfortunately, this fails:
"The email you used has already been registered."

To avoid to ask users to register with new email-adresses if they want to run a new survey, I searched around.

I have found two topics in the LimeSurevy-wiki:
docs.limesurvey.org/tiki-index.php?page=...Same_Browser_Session
docs.limesurvey.org/tiki-index.php?page=...ng_the_same_computer
(both seems to cover the same topic)

So, I have tried to run this workaround, whereas for version 2 and 3 it is quite obvious, that all possibilities I have used have to fail:

1: using the link to the register page
this resulst in the same message as above (email already used)
www.mydomain.com/httpdocs/limesurvey/ind...ang=en&newtest=Y

2. the link from the registration email (incl. token)
this resulst in the same message as above (email already used)
www.mydomain.com/httpdocs/limesurvey/ind...9mmf2b&newtest=Y

3. the link from the registration email (whereby token was deleted)
This results in a redirect to the registration page
www.mydomain.com/httpdocs/limesurvey/ind...=87943&newtest=Y

So, I guess, that i misundertood something.
If you could help me, it would be really great.
Thank you Daniel

I think you didn't miss anything. Right now (Limesurvey 2.0 will be different) Limesurvey isn't designed to run the same survey several times.

But you can do this by some workaround:

1. Copy the first survey by using export/import as csv. file
2. Export your participants data as csv. file
3. Edit the participants data using tools like openoffice calc. We want to delete the "completed note ("completed=Y" so the users can participate once more.
4. Import the edited .csv file
5. Now you have a new survey which is identical to the first one. You can invite all the former participants by using the email invitation feature

(not tested)