I launched the steam version of portal to test an idea I had, but shortly closed it. I went to the Source Unpack to do some runs, but when I tried save glitching, it didn't work, so I checked the version, and and it said 5135 (Steampipe) although it should've said 4034 (i think so), i launched 3420 and it was on build 3420, but Source Unpack just went to the Steampipe.