Conflict with domain mapping and Theme my login

Hi Guys,
You might not be aware of this but I have discovered that any version newer than seems to have a conflict with theme my login plugin. What happens is that when anyone is logged in with domain mapping active the page created by TML for registration no longer shows you just get a white screen.
There is also another issue in that you unable to logout of the site it just loops and creates multiple instances. I was unable to pinpoint the problem but when I reverted back to all worked well again .