Hi r0lZ.
No, this does not solve the problem. I also have Bitdefender and I noticed that it worked the first time you started your program. After that, I added the entire BD3D2MK3D folder to the antivirus exclusions. All program tools are in place.
P.S.
_ENCODE_2D_LAUNCHER.cmd starts and does its job, unlike __ENCODE_3D_LAUNCHER.cmd. Maybe this will lead you to some thoughts.