Application Not Found error when trying to open a data table in JSL

[#1]

I'm am trying to open a data table using the following code:

Names Default To Here(1);

dt1 = Open( "f3uel_airborne_2020_data");
dt2 = Open( "peaks_data_431");

When I run this, I get an Application Not Found error in the log and it fails to open.

Does anyone have any idea what may be going on here? I'm using JMP19 on a Mac.

[#2]

Guessing, no mac here, I think the file JMP is finding might not be a JMP data table. (On win, JMP tables have the .jmp extension.) JMP might be finding a .excel file but no excel application installed. 

[#3]

Well… I thought that too. I checked the file type and it is a JMP data table. If I double click on it, it opens in JMP.