site halted after upgrade to cb 1.9, j2.5.8; problem with admin registering users

I found that a site on CB 1.7, J 2.5.1 was sending two emails to a (test) user on registering him in backend, leaving passwords blank; the emails displayed different random passwords! One from Joomla: wrong,one from CB, correct!

I decided to upgrade CB to 1.8.0, then to 1.9; same problem, then started to get error
Fatal error: Call to a member function getAuthorisedViewLevelsIds() on a non-object in /home/progress/public_html/administrator/components/com_comprofiler/plugin.class.php on line 91

I ran the Tools; there was one error relating to my often deleted and re-registered test user.

I then upgraded Joomla to 2.5.8; same fatal error, all on /component/comprofiler/login;
now, all addresses at site now give Fatal error: Call to a member function getAuthorisedViewLevelsIds() on a non-object in /home/progress/public_html/administrator/components/com_comprofiler/plugin.foundation.php on line 44

Admin can log-in to backend - Joomla!, but I can't access any frontend page to try Joomla Login module...

memory_limit = 256M, only solution mentioned in Forum?
Any suggestions on how to get the site back, and then fixed the dual password problem?
Thanks

The site has come back, without errors, worryingly without me doing anything?

I would still like to fix the dual email, one wrong, bug...
Thanks
Trevor

trevor.bennett wrote: The site has come back, without errors, worryingly without me doing anything?

I would still like to fix the dual email, one wrong, bug...
Thanks
Trevor

www.joomlapolis.com/forum/153-professional-member-support/183254-joomla-17-duplicate-email-suppression