Using the latest release of Msys (RC).

When entering "msysdvlpr" at prompt:

Cannot find the rxvt.exe or sh.exe binary -- aborting.
Press any key to continue . . .

     Apparently, msys.bat can't find rxvt.exe or sh.exe.

     Entering the commands found in msysdvlpr manually makes no difference.

     Paul G.