hl2.exe crashes after injecting hacks

When I try to inject any of these hacks for CS:S it will crash the application.

The directions say to start the hack and then start CS:S but it just crashes right as it is about to begin.

I have also tried starting CS:S and then starting the hack but then the hack does not.

How can I fix this?

Make sure the application is undetected.

The next step you might want to take is to disable DEP.

Disabling Windows DEP (Data Execution Prevention)

And make sure there are no viruses if your not using mgph