Check the project before deleting everything.
My experience: two weeks ago I’ve exported my current live project, sent it to my friend who also has DT, jumped into plane and flew 3200km away from home to install my project on my friends DT and play a live show in his city.
Fortunately, we’ve checked the project the night before the live show. One sample was missing.
I’ve looked through patterns and got an idea of what file was missing. I’ve opened the .drprj file as .rar and found that sample there. I’ve looked into samples on DT and the file has also been uploaded there. But it was missing in the sample pool of the project. So, I’ve uploaded it to the sample slot where it belonged to be.
My DT is on 1.50, and my friend’s DT is on 1.51A - maybe that is the reason.