Edit: Changing the shortcut to another key and back again resolved the issue.
Via the Setup Wizard, I enabled NumPad short cuts. On the 'Shortcuts' tab, there is a shortcut with:
'First shortcut' = 'Num Del',
'Second shortcut' = empty,
'Enabled' = checked,
'Command' = 'JumpTo',
'Parameters' = empty,
'After executing...' = unchecked,
'Context' = '[CodeEditorHasFocus]', and
'Sync this shortcut...' = checked.
However, pressing the 'Del' key on the numpad just deletes a character and does not bring up the 'JumpTo' menu. Setting the 'First shortcut' to another key, such as Ctrl+Shift+Num Del', does bring up the 'JumpTo' menu.
p.s. *Very* pleased with the speed of CRR -- I had been trying the pre-release with and without unloading CRC, and had not seen much difference. Silky smooth now!