I have downloaded the latest version of ST-PI 2008_1_620 ver 0001 on my frontend. However, when I upload it from saint -> application packages -> frontend, it does not show in the Addon selection selection in saint transaction after uploading is complete. It does display and ask for .ATT and .PAT files to decompress during uploading the file.
It does not give any error as well. I have already done the latest SPAM/SAINT upgrade.