The typical limitation of UE. They, at least, should allow the engine to ‘try’ to open it; things without internal changes should work really fine! Only those with new functionalities could not work, but that should be OUR problem, not being automatically fully locked, without the freedom to make the try… I already suggested it, but it seems nobody cares.
Yeah since they changed the physics engine i don’t think you can revert back versions only convert in place to a higher version, if converting in place certain blueprints may not function like the previous version so you may have to fix them in particular circumstances, others will convert fine simple props or environments convert fine but anything with physics like motion to cars or other animations may break during conversion, best thing you can do is always keep an old version separate as backup in case you need to revert, but no you can’t start a project in 5 then go backwards in versions with the same project.
Sucks that you can’t downgrade. I mean, makes sense with Nanite not being supported… but considering the fact that V-Ray only works in 4.27 it just… sucks. Does anyone know of a vray work around for 5.1?
Actually, you can downgrade yes,
See that button?: (1º)
Click and it will appear something like this: (2º)
Click on the name, and change the version: (3º)
@Heroi1200
This is a misconception. Once an .uasset is saved in a newer version of the engine (like 5.4) it can’t be opened in an older version. There is a “package version” check which for 5.4 is ~1012. If the package version is newer than the currently opened UE version, the asset won’t open. My Downgrader plugin is the only way to downgrade assets.
A helpful post and very nicely illustrated; however, you may have misunderstood the original poster’s question. They asked about downgrading UE projects, not UE iteself. (If they’re looking to downgrade a project, they presumably already know how to install older UE versions side-by-side.)
