Error Icon on tracks?

What is this Icon that looks like a chip with an exclamation mark?

I seem to have a load of these, some folders are full of it. The tracks all play fine in Engine & the MC8000.


Edit: Its OK, I saw the answer elsewhere , looks like I found out then forgot. Everything functions fine, its just really annoying.

Next time you will have a question or a helping hand, maybe someone on this forum will provide you with the answer only if you can guess what will it be… Suppose that someone else encounters the same problem as you and take the time to read this forum, in search for an answer. The least you can do is to share your findings and the solutions, no matter how simple or complex it is.