My project or even single blueprint wont open in any other engine version?

[anonymous_user_066930e9]

@OptimisticMonkey;651451

You could always start a new 4.14 fresh project, and then just migrate over the assets you want from your project on a case by case basis. (assuming you can still open you project from a SCM backup)

i cant thats the thing, i cant even take a single blueprint from my project and open up in any other version of the engine besides the custom 4.13 i am running now, if i run in any other version it crashes.