Turns out, the standard microsoft solution resolved everything. I had mounted an unrelated harddrive earlier, it had a couple partitions, and I think it was improperly ejected, causing a few confusing things to take place down the line. Glad to report my machine was the culprit. <div class="gmail_quote">On Tue, Feb 15, 2011 at 12:31 PM, Robby Findler <<a href="mailto:robby@eecs.northwestern.edu">robby@eecs.northwestern.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> Hm. I'm not sure what to suggest now, but just in case, here's the filesize of the one I downloaded: [robby@gaoping] ~/.Trash$ ls -l racket-5.1-bin-i386-osx-mac.dmg -rw-r--r--@ 1 robby staff 53300468 Feb 15 09:47 racket-5.1-bin-i386-osx-mac.dmg [robby@gaoping] ~/.Trash$ shasum racket-5.1-bin-i386-osx-mac.dmg 9c7a130af2a4a139731a2733698fe45746d744c3 racket-5.1-bin-i386-osx-mac.dmg [robby@gaoping] ~/.Trash$ I'm using 10.6.6, but I have no idea if that matters. Robby <div><div></div><div class="h5"> On Tue, Feb 15, 2011 at 11:17 AM, Ben Dean <<a href="mailto:benjamin.dean@aya.yale.edu">benjamin.dean@aya.yale.edu</a>> wrote: > It's certainly possible, though I downloaded several times from both the > Northeastern and Northwestern mirrors. > I'm not sure how it would have gotten corrupted-- it appears to be the right > size, at least. > ben > > On Tue, Feb 15, 2011 at 12:11 PM, Robby Findler > <<a href="mailto:robby@eecs.northwestern.edu">robby@eecs.northwestern.edu</a>> wrote: >> >> I was able to download and install it just now on a mac. Is it >> possible your download got corrupted? >> >> Robby >> >> On Tue, Feb 15, 2011 at 10:59 AM, Ben Dean <<a href="mailto:benjamin.dean@aya.yale.edu">benjamin.dean@aya.yale.edu</a>> >> wrote: >> > Is any one else having trouble opening the .dmg file that was just >> > released? >> > I open the file (either for the binary, or the source) and get the error >> > message ""no mountable file system". >> > Just want to make sure something is screwy on my machine, not with the >> > distribution. >> > >> > I'm on OSX 10.6.5, Intel >> > ben >> > _________________________________________________ >> > For list-related administrative tasks: >> > <a href="http://lists.racket-lang.org/listinfo/users" target="_blank">http://lists.racket-lang.org/listinfo/users</a> >> > > > </div></div></blockquote></div>