Changing the ControlSpec Warp via the GUI breaks things

[patrickdupuis]

Selecting a Warp from the menu in the ControlSpec section of the Preset editor window breaks the cursor. The cursor can no longer be moved in the 2D GUI window.

^^ The preceding error dump is for ERROR: Message '_spec' not understood.
RECEIVER: ExponentialWarp

Also, preset editor windows can no longer be opened via the E button.

^^ The preceding error dump is for ERROR: Message 'map' not understood.
RECEIVER: ExponentialWarp