Thanks for the info. I'll have to look into doing that for more complex questions, where one needs to see the whole project in order to analyze what's going wrong.
For now, I just need to know if objects with the SOLID Behavior can do Tile Movement.
I tried an simple experiment. Here a "Player" object has the Tile Movement behavior enabled, but Solid behavior disabled. I have just one event. If Player's X-coordinate = 100, Solid is enabled. When I press the right arrow key Player starts moving right, but when it reaches X-coordinate 100, it freezes.
It appears that Solid and Tile Movement are mutually exclusive in Construct 3.