So, I've compressed all of my files to pro res LT. Yesterday, when I deleted the audio I could work with the video, no problem. It was gray and perfect. Now, When I drop video in it has a green line at the top and won't play correctly unless I render it. I had to change scratch disks, is that why? How do I fix this because its slowing down work flow.
Yes, changing scratch disks can cause renderfiles to be lost if the previous scratch volume is offline, but that is probably not the issue.
If your new footage is causing (light) green lines, something has changed. Compare the new and existing clips for differences. One common cause of a green line when the clips seem to be the same is audio frequency (44.1KHz vs 48KHz.)
Note: Some of the older files that were in the project are fine, the newer ones, not so much.