Just downloaded and installed PiTool Beta 121. First off the link was bad on your page, you had a trailing space which caused an issue, removing the space allowed the file to download. (the link had a %20 at the end).
Also, during the install Windows alerted me to a virus. It identified Trojan:Win32/Fuery.B!cl in the following file: C:\Users\user\AppData\Local\Temp\is-OBJ55.tmp\pvr_oc_support_setup.exe
It quarantined the file so hopefully I was not burned by this.