An error may occur on a survey for a couple of reasons.
1. When a survey is left open for an extended period of time the browser session expires and you will be timed out from the survey. In this case it is not possible to start the survey again or for a new link to be sent.
2.Please make sure that you have your browser cookies enabled. If cookies are not enabled the survey will not recognize you as the respondent when you reach the end page of the survey and you will get timed out.