I spoke too soon - it just happened again.
A different site this time, but still CCBill
I had to enable the TLS option to get through to the join page.
This is the site I was looking at
http://www.joy-swallows.com/?w=100005
BTW, that's not my affiliate code in there - it's the default one set on the 4realcash site (
http://www.4realcash.com/sites.php)
[edit] I just tried it again with the site that originally gave me a problem with ver1 and although ver 1.5 worked a little while ago it won't work there either, now - without the TLS box being checked. Hmmmmm
Summary - just in case you're now as confused as I am:
I apparently have to check the TLS box in order to access any CCBill join page
[/edit]