I have been using Mmex with an android tablet and 2 windows pcs for several months and all was well.  Recently the android tablet will not sync with onedrive.  I get an error saying ,item does not exist, each time I try to upload or download the database.  The 2 windows pcs sync fine.  I use the tablet the most but need to sync with the windows machines.  Anyone any ideas.

I have tried copying the file and accessing the new one and also creating a completely  new file but then I lose the data.