Bad news, it cleared the instance great for 1, but when I do the subsequent excel books it mysteriously stops, no errors at all.
It took a while to find out exactly where it goes off the grid, but this is the line..


System.Runtime.InteropServices.Marshal.ReleaseComObject (obj)
obj = Nothing

I even reversed the order and eliminated them one by one, but it seems that doing the Release again does not work!!!! seems kinda stupid to me. THe object is totally new each time it's created.
So, for now I am living with multiple instances in task manager until the pc is restarted...