Android error CD0 Constructor (UMG/paper2d files?)

[hultaj]

Hello,

To be specific:
1.What happend:
My Android blueprint-only game was working perfectly in editor and on android device. After package .obb file had 700+mb. I wanted to resize .obb so I deleted:
-. a lot of starter content I didn’t used (textures, materials, meshes, audio etc.),
-. paper2d folder because I didn’t used it.
After that my game stopped working on device and I got some paper2d errors during engine start.

2. How I tried to fix that:

• Disable paper2d plugin in editor - didn’t helped.
• Upgrade engine from ver. 4.7 preview 5 to 4.7 preview 8 - didn’t helped.
• Backup my project content files on HDD, reinstall UE4, create new blank blueprint project and copy my project content files into that new project - didn’t helped.

3. What is going on now?

• game still work perfectly in editor viewport and mobile preview,
• game work perfectly after launch for windows,
• game can be package without problems to Android apk.obb.
• after instalation apk/obb on device I got “[title] has stopped working” or something like that,
• after “launch on android” from editor I got a lot of error CD0 Constructor:
  Here is screenshots from error window from device:
  UE4 Android launch errors - Album on Imgur

What I can see in error window - game didn’t work because some engine umg/paper2d files are not cooked/packaged.
I have no idea why this stopped working and how to fix that.

Please help, I spend already about 17h on this problem and still no solution:(

[hultaj]

Problem fixed. It was a lot of work, but game work now on mobile device.
To fix errors (look screenshots up) I changed default fonts to my content fonts in project settings->general settings, and I choosed my own materials in paper2d settings. After that I didn’t had errors, but I had crash on start:D
To fix that I was packaging game not into apk+obb, but apk only (obb included inside). After that game works perfectly on device. Because of using only .apk my .apk was way to large. I resized my .apk from 700+mb to 45,4mb:) Just by deleting not used assets, starter content, removing engine files from content/slate except Docking folder (just for build, after package I moved them back there) and resizing my textures.

I’m leaving this post to help someone who will meet same problems.

[Fenra]

I had the exact same error messages as you, and changing the launch options seemed to fix it.

[anonymous_user_40d11edc]

I have the same problem,but I solved it. My solution is delete all the files of UE4 project on my android device,than reset the phone,good luck!