arc_object error

Hello Experts,

We are in to upgdtion project from 4.7 to Ecc 6.0 , now when i execute some standard tcodes like ,CN99, KO88, FMRE_ARCH, KBEB , KBEC. in ecc 6.0 , its throwing the same error in all these tcodes.

Error is :

The following syntax error occurred in program "SAPLARCH " in include "LARCHF01" ""OBJECT-" expected, not "ARC_OBJECT_"."

Pls guide me how to go abt it.

Thnks,

Sunny