To reproduce:
1. Open user's attached project ("Blank_Project_2019")
2. Reimport all Assets
-- Error in the console, file is not recognized

Expected: File is imported, no error is shown
Actual: File is not imported, error is shown

Reproduced with: 2019.1.0f1, 2019.2.0a11
Not reproduced with: 2017.4.25f1, 2018.3.10f1, 2019.2.0a10

Note:
- Issue is reproducible even with newly created .blend file
- An error is thrown in the console:
"Blender could not convert the .blend file to FBX file.
You need to use Blender 2.45-2.49 or 2.58 and later versions for direct Blender import to work."

Fixed in:
2019.3.0a1
2019.2.0a14

Fix note:
In order for the fix to be effective, Blender 2.8 instead of 2.79 must be set as default program to open native .blend files.