On 7.9.19 it still worked fine. On 7.10.1 I get:
Error for 'STR_AIRBUS': Default HWP capacity cannot be negative.
Error for 'STR_AIRBUS_STANDARD': Default HWP capacity cannot be negative.
Error for 'STR_AIRCAR': Default HWP capacity cannot be negative.
Error for 'STR_AIRSPEEDER': Default HWP capacity cannot be negative.
Error for 'STR_AIRTRUCK': Default HWP capacity cannot be negative.
Error for 'STR_AIRVAN': Default HWP capacity cannot be negative.
Error for 'STR_AVENGER': Default HWP capacity cannot be negative.
Error for 'STR_BATTLE_TAXI': Default HWP capacity cannot be negative.
Error for 'STR_BIGENTRY': Default HWP capacity cannot be negative.
Error for 'STR_BIG_BIRD': Default HWP capacity cannot be negative.
Error for 'STR_BIKES': Default HWP capacity cannot be negative.
Error for 'STR_BRIG': Default HWP capacity cannot be negative.
Error for 'STR_BUCKAROO': Default HWP capacity cannot be negative.
Error for 'STR_CADILLAC': Default HWP capacity cannot be negative.
Error for 'STR_CAVES_DROP_ENTRY': Default HWP capacity cannot be negative.
Error for 'STR_CHARIOT': Default HWP capacity cannot be negative.
Error for 'STR_CHURCH_ENTRY': Default HWP capacity cannot be negative.
Error for 'STR_CONVOY': Default HWP capacity cannot be negative.
Error for 'STR_DELOREAN': Default HWP capacity cannot be negative.
Error for 'STR_DELOREAN2': Default HWP capacity cannot be negative.
Error for 'STR_DEVASTATOR': Default HWP capacity cannot be negative.
Error for 'STR_DRAKKAR': Default HWP capacity cannot be negative.
Error for 'STR_DROPSHIP': Default HWP capacity cannot be negative.
Error for 'STR_EXPEDITION': Default HWP capacity cannot be negative.
Error for 'STR_FATSUB': Default HWP capacity cannot be negative.
Error for 'STR_FAUST': Default HWP capacity cannot be negative.
Error for 'STR_FIREFOX': Default HWP capacity cannot be negative.
Error for 'STR_FIRESTORM': Default HWP capacity cannot be negative.
Error for 'STR_FORTUNA': Default HWP capacity cannot be negative.
Error for 'STR_FUEGO': Default HWP capacity cannot be negative.
Didn't try 7.10.0.
Seems like the "NEW Soldiers and vehicles as modifiable craft stats"-commit could be responsible for it.
With "oxceModValidationLevel: 0" it does work.
I guess it's more of a mod-issue then and the mod needs to be adjusted in order to properly work with OXCE 7.10.1.