[Voice Pack] PooNanners Voice Pack!

[lueyja1]

Ok so shit's about to get weird....

I reinstalled RTST using the latest 1025 installer.
Default voice worked.

Successfully loaded a tiny tina voice pack, everything worked fine.
Re-downloaded the poonanner voice pack from exploding fists link above and placed the rtst_vpk file under \voicepacks

When I try and load the poonanners voice pack, the Tiny Tina rtst_vpk file get modified (It's date modified value changes to be the current time).
The load of poonanners fails and I now cannot load the tiny tina voicpack either.
Replacing the tiny tina rtst_vpk file with the original from the download does allow the tiny tina voice pack to be loaded.

Is there a reason why loading the poonanners voice pack would cause other voice packs to be modified? (they aren't in the same folder)