Mathcad Prime 10.0
I have MC Prime 9.0 and I've just install MC 10.0
When I try to open existing worksheet (created previously with 9.0) it does not open with MC 10 but with MC 9.0.
When I create and save new worksheet in MC 10 and try to open later on it, it tries to open it with MC 9.
To open it in MC 10 I have to open blank worksheet first and then load desired file, kind of annoying.
How to force opening old and new worksheets with MC 10? Do I have to remove/disable MC 9?

