I am running Joomla 1.5.23 and DT Register version 2.7.4b.
We have registration live right now, and 99% of the time it has been working correctly. But for some people, and I have been able to reproduce this problem myself, the "Next" button will stop working. All of the information will be entered in the forms, but then when you click the Next button the page just stays there and will not move on to the next one. All fields are filled, no error messages pop up. It just never moves to the next page.
I can PM admin credentials if you would like to see if there's anything weird going on.
I am having this issue as well. Its happening in ie7 and older versions of FF. Which 1300 of our pcs are running. I did just upload the update which took care of my other issue but not this one. Thank you