Found a potential two bugs which can cause a CTD.Don't know if the two files are from WOS or from OHII, but it seems that OHII files are OK.
They are in the data\air directory:
1. AS_USHeavyBomberMedWar\AS_USHeavyBomberMedWar.GR2
2. AS_USFloatEarlyWar\AS_USFloatEarlyWar.GR2
They are missing LO1 node on wings for Leigh lights.
Use apropriate .GR2 files from original mod to solve the problem.