Secure Downloads

Hi,

environment: TYPO3 6.1

I seems there is a problem computing the hash, if no FE group is given as parameter. FYI, I get this message "Hash invalid! Access denied!" for every file. A solution would be setting a FE group 0 by default in no one is given as parameter as done for FE user $frontendUserId = 0;.

diff --git a/class.tx_nawsecuredl.php b/class.tx_nawsecuredl.php
index 22ac5cc..b67476d 100644
--- a/class.tx_nawsecuredl.php
+++ b/class.tx_nawsecuredl.php
@@ -168,7 +168,7 @@ class tx_nawsecuredl {
                        $frontendUserGroupIds = t3lib_div::trimExplode(',', $this->objFrontend->fe_user->user['usergroup'], TRUE);
                } else {
                        $frontendUserId = 0;
-                       $frontendUserGroupIds = array();
+                       $frontendUserGroupIds = array(0);
                }

                $cacheTimeToAdd = $this->extensionConfiguration['cachetimeadd'];