Error rvm CLI may not be called from within /etc/rvmrc

Error rvm CLI may not be called from within /etc/rvmrc

After installing a multiuser (systemwide) RVM on Fedora 17 I get the
following error when logging in:
Error:
/etc/rvmrc is for rvm settings only.
rvm CLI may NOT be called from within /etc/rvmrc.
Skipping the loading of /etc/rvmrc
and the following when logging out:
bash: return: can only `return' from a function or sourced script
My /etc/rvmrc file is
umask u=rwx,g=rwx,o=rx
I've searched Google and SO for answers and all that I find do not appear
to be relevant to this case, they are mostly OSX.
Does anyone know the cause of this?