When you downloaded there was a note saying you should ensure your system had the correct 2 MSVC runtime dll's installed.
There is also a Sticky post telling you the same thing on this forum.
But here it is again:
Please make sure you have the latest version of both of these Microsoft C++ Redistributable runtime libraries.
The 2008 Redist is used by wampmanager
The 2010 Redist is used by Apache
FOR WAMP 32bit
Microsoft Visual C++ 2008 SP1 Redistributable Package (x86) [
www.microsoft.com]
Microsoft Visual C++ 2010 SP1 Redistributable Package (x86) [
www.microsoft.com]
FOR WAMP 64bit
Microsoft Visual C++ 2008 Redistributable Package (x64) [
www.microsoft.com]
Microsoft Visual C++ 2010 SP1 Redistributable Package (x64) [
www.microsoft.com]