From: Tim Uckun Date: 2011-09-12T20:33:44+09:00 Subject: Re: Problems with rubygems > You should ask your distribution why it wants to kill your time by > crippling packages like zlib. > > I do however have to say that something like: > >  "incorrect header check" > > Is NOT a good error message. > > So rubygems guys, make the error response better. What the heck is an > "incorrect header check"? Be more clear on that! > ' Well something was severly screwed up with my system and re-installing all the zlib* packages didn't fix it. Luckily I was intending to upgrade anyway so I upgraded and re-installed rvm and it worked. What a pain though, wasted a whole lot of time. I do agree that the error message is atrocious. Completely worthless.