I have been using Sketchup 8 since it was released, but now I have downloaded 2014. When I created models, i would select components and then group them together by pressing ‘G’ on my keyboard. Why has this been disabled in 2014? Is there a complete list of short-cuts available?
G have by default in SketchUp created Components. You had to make your own custom shortcut to create Groups.
Shortcuts are all defined under Preference > Shortcuts and you can export and import your settings.
In our Help section we also have a Quick Reference Card over defaults:
http://help.sketchup.com/en/article/116693
In the list its under edit/make group in the short cut list
Phil
PrintKeys.rb by Jim Foltz creates a printable list of your shortcuts.
https://sites.google.com/site/jimfoltz/my-sketchup-plugins/print-shortcuts
And there’s ShortCutsV2.rb which @tt_su fixed for me a while back. 
shortcutsV2.rb (118 Bytes)
-Geo
I typically set ‘g’ to make components and ‘G’ to make groups. Keyboard shortcuts are case sensitive.
John
.