UID error with OM 2.2.3

Hi

I'm trying to port may Motif applications from Linux Woody + Openmotif 2.2.1
to Linux Sarge + Openmotif 2.2.3

The UIL compiler reports no error but I can't run my application :
Warning: Idb__HDR_ReturnItem: NULL data pointer - MrmNULL_DATA
Warning: Urm__CW_ReadLiteral: Cannot find RID literal '50001' - MrmNULL_DATA
Warning: Idb__HDR_ReturnItem: NULL data pointer - MrmNULL_DATA
Warning: Urm__CW_ReadLiteral: Cannot find RID literal '40001' - MrmNULL_DATA
Warning: Idb__HDR_ReturnItem: NULL data pointer - MrmNULL_DATA
...

It works when I run the UIL compiler on Woody and run the application
on Sarge but this is not satisfying me ...

I also noticed that the UID file generated on Sarge is 4 times smaller than the Woody one.

Any idea ?