Remember to visit our Known Issues page for common problems and solutions.
from Dover wrote on January 13, 2019 at 7:56 am:
How do you upgrade from 2.0 to 4? I checked for latest version but I cannot find the page.
Admin Reply by: cjpryor
The latest version can be downloaded from here: https://www.nmcollectorsoftware.com/download/
2.0 is going way back. I assume you have data you wan't to migrate. If that is the case, I would suggest installing the latest to an entirely new location and then copy your old database to the new location.
Your database is a folder named nmcswDB. It's location in the file structure has changed since version 4.0. Depending on where you originally installed NM Collector Software 2.0, your database should be in a location similar to this: C:\NMCollectorJE\nmcswDB. Your new 4.0.1 installation directory should be something like this: C:\NMCollectorJE\NMCollectorJE.app\Contents\Resources\nmcswDB.
I would suggest deleting the new nmcswDB directory entirely before you copy your old database over to the new location.