Game Save javascript error when physics disabled

Link to .capx file (required!):

dropbox.com/s/r656jqhxf5ira7q/TestSave2.capx

Steps to reproduce:

1. Create a sprite with the Physics behavior

2. Set the Physics initial state to disabled

3. Perform a Save Game

If you enable physics on the sprite prior to the Save Game execution, the save is done successfully without error.

Observed result:

A javascript error crashes the game

Expected result:

Game is saved successfully without a crash.

Browsers affected:

Chrome: yes

Firefox: yes

Internet Explorer: yes

Operating system & service pack: Win7 Pro SP1

Construct 2 version: r139

Thanks, should be fixed in the next build.