Thank you for bringing this problem to light.
Unfortunately I cannot currently replicate the bug...
I have installed a 32-bit version of the Ubuntu Mate 16.04.2 distribution within a virtual box this morning and am able to load and play the levels from the pre-compiled build without any trouble.
Could you please ensure that you have all the required libraries for Unity installed and updated, and that all the relevant permissions are granted.
Otherwise I would suggest trying a different version of Ubuntu and seeing if the error persists.
Cheers,
Matthew (AIBIRDS ADMIN)
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