Hi all. I recently purchased the survey component for my Joomla 3.0.3 site. The component and cjlib components installed fine and I have created some links on the front end and have created a couple of test surveys.

When I attempt to delete the surveys from the backend however, I get a 500 error. I had a look at the PHP error log and found this line:

PHP Fatal error:  Call to undefined method CommunitySurveysModelSurveys::remove_surveys() in C:inetpubintranetadministratorcomponentscom_communitysurveyscontrollerssurveys.php on line 284

Any ideas how to rectify the issue?

If I try and see the responses (of which there are none) I receive another 500 error and this error in the log:

PHP Fatal error:  Class CommunitySurveysViewResponses cannot extend from interface JView in C:inetpubintranetadministratorcomponentscom_communitysurveysviewsresponsesview.html.php on line 18

Any users trying to submit a survey receive a 401 error as well. I've made sure that they are able to submit surveys, however, still no luck. Each submission, I noticed that these lines would appear, I'm not sure if they're relevant though.

[19-Mar-2013 23:25:54 UTC] PHP Notice:  Trying to get property of non-object in C:inetpubintranetlibrarieslegacymodulehelper.php on line 150

[19-Mar-2013 23:25:54 UTC] PHP Notice:  Trying to get property of non-object in C:inetpubintranetlibrarieslegacymodulehelper.php on line 154

[19-Mar-2013 23:25:54 UTC] PHP Notice:  Trying to get property of non-object in C:inetpubintranetlibrarieslegacymodulehelper.php on line 160

[19-Mar-2013 23:25:54 UTC] PHP Notice:  Undefined property: stdClass::$content in C:inetpubintranettemplatessystemhtmlmodules.php on line 17

Other information
The site is running off IIS 7.5 and MySQL. It is an intranet site, so there is no external access.