Reported on github here: https://github.com/CleverRaven/Cataclysm-DDA/issues/12340
And quoting myself further here.
Several of the turrets in the Vehicle Additions Pack cite items that do not exist, resulting in errors on the install screen.
This occurs the first time any such selection is highlighted, after which it demands an undefined item without further trouble, applying the same fix to any parts demanding the same non-existent item.
All vehicle parts I can find that have this bug:
- Mounted .22 dual turrets
- Mounted .45 dual turrets
- Mounted 9mm dual turrets
- Dual nail turret
- Mounted .22 quad cannon
- Mounted .45 quad cannon
- Mounted 9mm quad cannon
- Quad nailer
- Mounted MG turret
- Mounted MG
- Mounted energy turret
- Mounted laser