Description: When you re-open a processed multispectral project, the images in the raycloud look black and the thumbnails show up as white. Thus, marking GCPs or MTPs is not possible. However, this does not have any other effects on the project.
This happens if you have kept the radiometric target images and the other images in separate folders.
Workaround: Keep the radiometric target images and other images in the same folder. You will need to process again.