I found myself in some trouble installing some gems using IronRuby and igem, including rake, the errormessage wasn’t really clear to me.
After some google-ing around I found the swithches to get a better one:
igem install rake –verbose –debug
I guess I could had poked around the gem help commands too but hey – whatever gets me the results.
Anyway, the problem was that I didn’t have write permissions in two folders:
C:\Program Files (x86)\IronRuby 1.1\bin
C:\Program Files (x86)\IronRuby 1.1\Lib\ironruby\gems