It's not letting me import with the standard menu, how do i import?

[JosephcatZ]

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[xenco]

I had the same problem using Blender 2.90 and solved it this way:

1. Edit the init.py and replace line 18 with the following "blender": (2,90,0),
2. Zip the io_gfbmdl directory
3. Install using the zipped file via blender
4. Activate the plugin