I figured I would post this to PLT first because I have not yet tried to install SSAX on anything else. I downloaded SSAX version 2006.05.30 as a .plt archive.  When I try to install it in PLT version 371 on Mac OSX, I get the following error: cannot install; version (200) of collection ("mzscheme") is required, but version (370) is installed  === context === /Applications/PLT Scheme v371/collects/setup/unpack.ss:248:42: loop /Applications/PLT Scheme v371/collects/setup/unpack.ss:138:10 This is the installer progress window: setup-plt: Setup version is 371 [3m] setup-plt: Available variants: 3m setup-plt: Main collection path is /Applications/PLT Scheme v371/collects setup-plt: Collection search path is setup-plt:   /Users/mikeb/Library/PLT Scheme/371/collects setup-plt:   /Applications/PLT Scheme v371/collects cannot install; version (200) of collection ("mzscheme") is required, but version (370) is installed  === context === /Applications/PLT Scheme v371/collects/setup/unpack.ss:248:42: loop /Applications/PLT Scheme v371/collects/setup/unpack.ss:138:10 The only reference to this kind of error I found on the net was in French, and Google's translation was less than spectacular (such that I couldn't make sense of the fix): <a href="http://www.developpez.net/forums/archive/index.php/t-418634.html"> http://www.developpez.net/forums/archive/index.php/t-418634.html</a> Anybody know what's going on?  Any help would be greatly appreciated! (This came about trying to test out the recipe for "simple XML changes" at <a href="http://schemecookbook">http://schemecookbook</a>.org/view/Cookbook/XMLRecipeSimpleChanges by HectorEGomezMorales and GordonWeakliem) -- Mike J. Bell on gmail