Draftsight 2017 x64 won't start

Dear Draftsight,

I have a "small" problem with the software. After the activation window it pops up for a 0.1s then quits.

I have Windows 10 x64 (CU) with Comodo Firewall and Avast virus scanner

On Windows 7 (dual boot computer) it works fine.

Can you please help me, how can I solve this issue?