Thank you, Will do.
I'm using v1.28.4
I didn't realise there was a similar 'Layer' folder in Internal storage. I was using the one in the SDcard. When I saved the files to the internal folder it worked. This is despite the Reference setting saying "SDcard/......."
How do I now change Collect to look for the MBTiles in the SDcard and not on the internal storage? (As there is usually more space there)
Regards