"nothing happened" ?? Not possible, in all case you will have a message box.
Have you extract the file ? You will have a file called "mGalaxy_Script.exe" in the same folder than "VisualBoyAdvance.exe" and if you check the option "use script (if available)" the emul can't run, you are forced to have a message.
If you make a right click on "mGalaxy.exe" to see it s properties, in "details" the version is 5.0.0.0 ?