Help conrdog hack

Hi
well my error is the next one: i open the hack with injector(i try all injectors) and open CA but it crash in login screen with the next error: the instruction in 0x05154b71 have reference with the memory in 0x1545f805. the memory cannot be written. Click acept for finalize this program.

I have windows xp service pack 3,tried all compabilyty modes.

Thank you!