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Yup, that indicates to me that the shaders aren't initialized properly. I fixed the problem earlier today, so in the next update you should be able to fully play the game albeit without shaders, sorry :| I'm not a huge OpenGL expert, but I hope at least playing the game is fine for you!

Is there the possibility that you could test it with windows? Because I don't think it's Linux. My guess it's the intel integrated graphics

I'm planning to install Win7 on miniPC, probably this weekend 

Ok, great. Hopefully it works! Cheers man

It works on Windows

Great to hear that! Seems like a Linux problem then :/