ESP value modified.

Hello.
I hooked an address of a function withing my own process, but now when i run it i get this error:

Code:

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Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call.  This is usually a result of calling a function declared with one calling convention with a function pointer declared with a different calling convention.

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I was testing this on Vista and wondering how can i bypass this?Note that thsi is only valid in debug builds.
Thx

Why would you want to bypass something that is obviously erraneous and bad to have in release code?

Well, i need to bypass it in the debug build so it no longer is erranouse. I modified the code runtime to fix a few things, and the "error" is completely of my making. I just wanna know what i need to do to make it all nice.