This ought to be in the Helpline forum.
Have you contacted Pinnacle about this?
I quickly gave up using this software (actually its predecessor) as it gave me nothing but trouble. I qualify that though by saying some people get along fine with it.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?