DO NOT INSTALL STS in the C:/Program Files directory on a Windows 7 box. Microsoft has made changes to the Program Files directory to make a virtual copy of any file changes. So, if you try to change the sts.ini settings, it really makes a copy of the file in a virtual directory and the application doesn’t recognize it.
My original installation was pointed to a SUN JRE that was an older version. Once I moved my STS installation outside the Program Files directory, I was able to correct the sts.ini vm path to use the correct JRE.
