Upgraded from 4.11 to 4.12, and project won't open

Development Platform & Builds
, , , , , ,
1

I just upgraded from 4.11 to 4.12. My old project has some blueprints that I would like to gain access too. Can’t really remember how I had implemented them.

Error messages are:

[2016.09.02-08.18.55:202][ 0]LogLinux:Warning: dlopen failed: /home/zerophase/Documents/unrealprojects/Dialogues/Binaries/Linux/libUE4Editor-Dialogues-494.so: symbol _ZN6AActor20NotifyActorOnClickedEv, version UE4 not defined in file libUE4Editor-Engine.so with link time reference
[2016.09.02-08.18.55:202][ 0]LogModuleManager:Warning: ModuleManager: Unable to load module ‘/home/zerophase/Documents/unrealprojects/Dialogues/Binaries/Linux/libUE4Editor-Dialogues-494.so’ because the file couldn’t be loaded by the OS.

I tried removing that file, and just ended up getting the same error, on libUE4Editor-Dialogues.so.

What are my options for upgrading the project?

2

Remove all old .so files, especially ones that have numbers in them (like -494.so in your example) - those were hot reloaded. Preferably, do not reuse the same directory for a new engine version.

3

Ok, I’ll give that a try. I’m guessing Linux doesn’t have all the features of Windows yet for upgrading projects?

4

Yes and no. On Windows you can also run into problems due to stale DLL files lying around.