>> http://mysubdomain.jambage.com/index.php?id=2&tx_srfeuserregister_pi1[regHash]=a69a53e9e78f917921f2 > > > that is why it can be set to a short url in constant editor? unfortunately there is a bug in sr_feuserregister. So setting the constant for short url will lead to not working url's in some cases.