The three hubs now play their environment theme (heard in the levels) instead of the same "hub theme"
It is now possible to backtrack in Forest4-1
Fixed the saving of Forest4-1
Fixed the puzzle in City4-1 so the cube doesn't fall from the start and is solved as originally designed.
Fixed the saving of searchlight angle in Forest4-2
In Forest3, position and state of light is not saved until the light powerbrick is activated.
In City2, there's now an opening allowing you to get out of the first room in case you turned off the TV too soon. Also, the cube and TVs positions are not saved unless the portal is powered on.
In the Forest hub, raised the platform leading to Forest5 to prevent progression issue.
