05-18-2017 11:21 AM - edited 05-18-2017 11:22 AM
If you're importing the files from the SD directly to Studio, are you using Studio as a standalone program, or the Studio that launches from within Quik for Desktop? If you're using a dedicated Studio program on your computer, then that could be part of the problem. The latest version of Studio is not a standalone program, but it is openable within Quik for Desktop.
Also, it's best to have the content on your hard drive instead of the SD card when you're editing or rendering the video. Read errors from the SD card can cause these types of issues, but that can be prevented by having the files you're using on the hard drive.