Lose backend in joomla

I am trying to set up a web site using ajax register but when I install ajax register I lose my whole backend. I wasn't sure that it was your product that was causing it but after just installing ajax register after the initial joomla install it went blank (see image). Any ideas? Thanks.

It shouldn't have anything to do with my component.

Yeah, I jumped the gun on this. Have had multiple failures with different extensions installed and even one joomla install with no third party installs. Seems to be ok with my latest joomla install. Never had this problem before. Really kinda weird! Thanks for the reply.