I installed hitfilm express and it went well in the first time. But after it, I can't open it again. Everytime I clicked the icon, it will open a window for one second and close immediately. I already repaired it but still the same.
Sorry to hear about this. It will most likely be best to contact us at support and we will be able to help more.
It looks like you're new here. If you want to get involved, click one of these buttons!