How to solve ActiveClassRedirects error?

An Epic Staff told to me to try the UE 4.9 Preview to solve a problem which I am having with Android development, but after I created a copy to 4.9 version I received 245 errors like this:
ActiveClassRedirects contains a collision with multiple redirectors for old class named GameplayCueNotify
(For more errors see attachment)

I am developing my game in Blueprint and I have no Idea how to solve these errors… could anyone help me, please?

Same for me. Did you find a way to resolve it already?

It is a bug…UE-18229

Got the same problem. You think this will be fixed in final 4.9?

I do hope so…

Same here… :-/ the game runs fine, but I don’t like red error messages :slight_smile:

Please put your message as comment, not an answer. regards.

Just updated from 4.7 to 4.9 - these are a thing.

Got the same after upgrading from 4.8.3 to 4.9.0 (like in 4.9p4)

Ah, thanks

Oops… seem like a very aggressive solution :slight_smile: I’ll will think about it before trying.

I got something very similar with my 4.8.3 project on 4.9, please help

Same errors here 4.8.3 → 4.9.

So I upgraded my project from 4.83 to 4.9 like others on here, and had load errors regarding ‘ActiveClassRedirects’. In my project’s DefaultEngine.ini, there was hundreds of lines of stuff about ‘ActiveClassRedirects’, and I simply removed them all, which got rid of all the errors.

Yeah, exact same issue here. My game will not package due to this.

Same here after converting from v4.8.3 to v4.9

  1. Back up your Project :wink:
  2. Migrate to 4.9
  3. Close Editor
  4. Open MyGameDir\Config\DefaultEngine.ini
  5. Delete all lines starting with (+|-)Active(GameName|Struct|Class)Redirects
  6. Save and hope for the best
  7. Start Project, all Errors gone

These lines where there before (in the .ini), must have been from a conversion process from a prior Version… but this can’t really be, because I started with a fresh 4.8 ThirdPerson BP Project.
Only thing I added so far were “Animation Starter Pack”, “Prototype Characters” and “Prototype Weapons”

Seem to work, thanks !

Worked for me too, thank you.

Yes it worked for me as well, now the question is, will this affect anything else? like maybe stuff that will not behave as expected?