Invalid Page Fault

I have had several invalid page fault all with the same ending i.e. at 0167:bff7a125.
e.g. WATCH caused an invalid page fault in
module KERNEL32.DLL at 0167:bff7a125
and

SAVENOW caused an invalid page fault in
module SAVENOW.EXE at 0167:0041ad54

Does anyone have any suggestions?