Recently upgraded to Windows 10 pro V 1903, Core i5, 3.30 GHz, 8GB RAM, 64-bit; No problems importing sony AVCHD movie files to my project. Now importing .MOV files - vids I took with my iPhone 10 - the first few imported no problems. Now, when I import those files, they turn "green" and "red", program crashes, or just the audio imports.
So, I followed the instructions to download Quicktime Alternative (uninstalled existing QuickTime 7); still does not fix this problem. And now, after opening the program, it immediately crashes.
What else could I do to fix this problem?