Warning! PATH is not properly set up, usually this is caused by shell initialization files

I was getting the same warning even after upgrading RVM to version 1.25.16. I was able to fix the warning by running:

rvm reset

Then when I ran:

rvm version

I did not receive the error anymore. Hope this helps!

If you know what you're doing, and your PATH is set to what you want, you can suppress this message by putting the following in your ~/.rvmrc:

rvm_silence_path_mismatch_check_flag=1

This is handy if you use other path-manipulating programs like virtualenv, or if you just want to prefix your path with ~/bin or something.

I was able to get rid of this by doing

rvm get head