Please help me. I'm not overly tech savy. Why all of a sudden during an editing project do my transitions give me the lovely blue exclamation point? Dale

A blue exclamation point means that Studio cannot find that file, or it has been somehow unlinked to the project. This normally happens for example if you work on a project that includes a video file, and you move that video file to a different location.

If it's happening with transitions, then Studio for some reason is not finding the transition files in order to be able to display them.

Could be a problem finding the render files. Try deleting the Auxiliary files with 'file - delete auxiliary files' and then let them re-render.