Windows 10 Cubase 7 Fail - Now what?

Ok I changed my mind and now seriously considering spending the $100 and buying Cubase 8. I am still however wondering since Cubase 7.5 seems to be working ok, though I have not tested everything can I go on using it? Is it now considered a demo version or a something worse a self self-destruct version. I am still getting messages as stated in the above post.

I started a new thread to help me decide if it is safe to get Cubase 8 for my current Window 10 set up. “Is it safe”? “Is it safe”? (from the Marathon Man)