Ruby on Rails: rb_class_superclass not located in msvcrt-ruby191.dll (ruby-prof error?)

So, long story short, I had o format and reinstall my OS hence all my dev utilities.
git env sorted.
DevKit was fine.
Sphinx/mysql fine.
Bundle installed perfectly.
Everything is gravy until I go to rake db:create and build my database.

OS: Win7 64-bit
gem -v 1.8.24
rails 3.1.3

Now the problem, when I rake anything I get a pop-up window

ruby.exe - Entry Point Not Found
The procedure entry point rb_class_superclass could not be located in the dynamic link library msvcrt-ruby191.dll

I've tried clean installing ru

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