Stable update: 3D vanishing point; Independent layer scrolling; Layer Z elevation & more.
Just messed up my programs from the last stable version :/ I can't open them without an error.
As indicated :
Following the retirement of Construct 2, support for the legacy C2 runtime has now been removed from Construct 3. You can still import Construct 2 projects (.capx files), providing they are compatible with the C3 runtime.
It is likely that you are using projects which are still running C2 runtime.