Unity 5 crash on asset import with android

Questions & Answers
1

I am currently working on a small Android app, but up until now everything was created with Unity’s Build Settings set to PC Standalone. Everything works in the Editor, but if I want to change the Build Settings to Android, Unity freezes (no error message or anything) as soon as it tries to reimport the first .png file.

Any Idea how to fix this?

As a little addendum: this project was recently ported from Unity 4.6 to 5.0 and on 4.6 it worked with android.

Addendum 2: I just noticed (after leaving the ostensibly frozen Unity Editor running for some time) that it doesn’t actually freeze, it just takes ages to reimport the images (and these are not big images)…and it is using only a fraction of the system’s available resources (<0.5%)…it is now running for more than half an hour and converted a single image file…(same behaviour on 4 different machines)

2

This seems to be (at least in our case) connected to the textures’ import settings. This Project used advanced settings and these seemed to take ages to convert to Android. After I deleted the .meta files for the .pngs, they imported fine. To e more precise: the Override options for Android caused the issue (RGBA Compressed ETC2).

3

The loading of png files and converting them can saturate the CPU for many minutes. Be patient – it’s not crashed.

4

Try clicking on “Build and Run”. This starts importing .png and .exr and other files without hanging.,Try clicking on “Build and Run”, this starts importing .png and .exr and other files without hanging.