This is a known bug with all Inibuilds aircraft. To my knowledge the problematic approaches are LSZH ILS28 and ILS34. Other users reported similar problems at GMMN ILS17R and EGCC ILS05R. I only tested at Zurich myself. Some reports say the bug got fixed in the Inibuilds A300 but remains on all other aircraft, I only tested the A320 Neo, A321LR and A330.
There is also a conversation to this topic in the MSFS forum with the title: "All inibuilds aircraft FMC crash when loading ILS28 in LSZH"
It would be interesting to know if Inibuilds plans to fix this bug.
