Problem with installing Corel X7 trial

I have problem with installing Corel 7 on my laptop.

In main installer window I got empty space, empty buttons, and I cannot start install. 

Checkbox to agree license is active. 

Button to abort install, while empty, works. 

Button to procede install not works.

I can switch buttons with TAB and they are lightened, but install button still not works. 

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