Nice job, thanks. I noticed with LOD viewer hitboxes were all wrong (also Fuselage nodename in data.ini). I've updated the data.ini to improve. File is attached. Feel free to reuse of course.
A400M_DATA_updated.INI
Alternatively the wrong cockpit .LOD files can be corrected using a hex editor to rename the alt_digX, alt1_digX, alt2_digX nodes in reverse order. I've done it on my files.
I confirm : I had the same issue (does not start) and disabling Avast solved it. However previous LOD viewer version (0.5.1) worked well even with Avast on.