We have had crashes with using Lumetri effect on timelines with Sony F55 XAVC media on them. Specifically, they are usually multicam clips with Lumetri applied to the individual camera angles within the multicam timeline. Our theory is that the effect was applied on one machine and when the project file was opened on a second machine the timeline either crashes on media encoder or direct from timeline output. Sometimes the clip will show as black in the program monitor. Occasionally, the clip will show up as a red and white checkerboard. This is making it impossible to function. Seriously thinking of jumping ship. Only been using your products since 1998. We send crash reports regularly but apparently you're too busy adding endless list of features to bother with such an issue.