I'm pretty sure it's the 64 bit version, all of the .msi files have x64 in the name: ActivePerl-5.14.2.1402-MSWin32-x64-295342.msi

Laptop is running Trend Micro Anti Virus, desktop runs Norton. For grins and giggles let me disable the anti-virus and retry the install. I've never had a problem with anti-virus programs causing issues, but it's worth a shot.

All installs were run under an account with full administrative rights.

Update: Shutting down the AV tool made no difference. Nothing reported in the install log.