PNG files stopped working in Blender. libpng error

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1

PNG files suddenly stopped working for me in Blender. I just get pink color if I use a png file as texture. Doesn’t matter if its with alpha or without, just WHOLE png format doesn’t work. It looks like “there is no texture” error, but I tried multiple files and it turned out that however I use png, it doesn’t work. However, in texture and material mode and in UV editor I can see the texture (also in file explorer). I haven’t changed anything recently nor in Blender, nor in my computer. In console I get this error:
libpng warning: Application built with libpng-1.6.21 but running with 1.5.10

I have Windows 7 32 bit, Blender 2.78.

png error.jpg1920×1629 703 KB

2

Problem kind-of-solved. I read on development page that problem exists in Blender 2.78 windows 32 bit binary only and was recently fixed. https://developer.blender.org/T49454 Fix will be included in 2.78a release, but I downloaded latest daily build and PNG works there.