gemsync fails with "Error: private method `split' called for nil:NilClass"

[charlesroper]

http://pastie.org/730569

[ C:\ ]

pik gemsync Select which Ruby you want:

1. 092: IronRuby 0.9.2.0 on .NET 2.0.0.0
2. 191: ruby 1.9.1p243 (2009-07-16 revision 24175) [i386-mingw32]
3. 186: ruby 1.8.6 (2009-08-04 patchlevel 383) [i386-mingw32] ? 2

There was an error. Error: private method `split' called for nil:NilClass

in: pik/version_parser.rb:11:in initialize' in: pik/version_parser.rb:6:innew' in: pik/version_parser.rb:6:in parse' in: pik/commands/gemsync_command.rb:25:inplatform_consistent?' in: pik/commands/gemsync_command.rb:15:in `execute' in: pik_runner:35

[rdp]

which versions of rubygems?