InitGUI Failed, win32 Error 14 ("Not enough storage is available to complete this operation")

Again, in case anywone gets bitten…

I am getting this with increasing frequency using windbg 6.6.0007.5 (64
bit). The symtoms are that you start windbg and all you get is a dialog bix
with that text in it and an OK button. Clicking the button dismisses the
dialog and windbg exits.

This is a hard error, and the only ways I have found to fix this is either
to do a complete deinstall reinstall or to rename away the directory

\Program Files\Debugging Tools for Windows 64-bit\riched20.dll