I checked the install file and install directory with norton antivirus and spysweeper and niether found anything. i am the author of it though so feel free to wait for a response from someone else.
if you are still scared you could even just compile the program yourself using the source code (Assuming you know how)
also the installer was made using NSIS, which is an open source installation creator found at
http://nsis.sourceforge.net/
what antivirus are you using?