I am trying tp import a map (.umap) and it will not load up. I am pulling it from my flash drive. What do I need to do?

I am trying tp import a map (.umap) and using the IMPORT icon and UR4 does not even see the map in my flash drive. Then, I open up my file manager and on my flash drive I see the map.
Then, I drag and drop the map and in and it gives me an error.
Also, when I double click on my map to attempt to open it up it asks me with what program shall I open it up.
So my questions are as follows:

  1. How do I get my map from my flash drive to UR4?
  2. What program should I use when double clicking to open my map?
    Thank you,
    Christopher Yarusso
    yarussochris@gmail.com

It sounds like the assets required to load the map are not at the expected locations.
I would expect to get it to work the missing assets will need to be in the correct location.

Confirm by reviewing what the log says when you attempt to load the map.