Forget about the zlib problem, that was a file missing in a single earlier release that I mentioned and is needed for VT to function at all.
If you remove the zlib1.dll from the system directory you won't change anything, as that file is now in the VT directory and is, like I said, necessary for operation.
I opened both logs and configs with this 2010-06-08 version of VemsTune, works great. I have a single core Pentium Mobile with Windows XP.
When mentioning ANY bugs or problems, please consider what could be important data to know to tell us more about the bug.
What OS are you running and what other computer specs?