Unity 4 isn't downgradable at all?

[Harter]

Hi

I can understand why I can’t open project made with Unity 4 in Unity 3.5, but… why can’t I import assets? Isn’t *.unitypackage should be like universal archive? I’m totally confused. Hope it’s my fault, not Unity’s team.

Fatal error!
type == kMetaAssetType pathName.find (“library/metadata”) != 0

[superpig]

Unitypackage files are actually just .tar.gz files (IIRC), so they’ll be compatible across anything and everything, but it’s possible that the stuff packed inside - the metadata, any prefabs/scene files etc - will be in Unity4 format and so won’t be usable with Unity 3, just as if you’d tried copying the files from project to project directly.

[Harter]

@superpig

Unitypackage files are actually just .tar.gz files (IIRC), so they’ll be compatible across anything and everything, but it’s possible that the stuff packed inside - the metadata, any prefabs/scene files etc - will be in Unity4 format and so won’t be usable with Unity 3, just as if you’d tried copying the files from project to project directly.

I’ve got it. Thank you.