I've been using LiberKey "forever" and never had a hiccup. Suggested to a friend to use it and he installed the menu, 4.36 MB (current version).
All went smoothly but after that he cannot install any apps from the LK site. It just hangs, he selected to install Wavosaur but nothing happens. When he tries to cancel the installation he sees the pop-up "This window is busy. Closing this window might cause some problems. Do you want to cloce it anyway?" He hits OK.

He is running on W7 32-bit and using AVG Internet Security 2012 (paid version). I suggested he ensures that the AVG firewall is not blocking and he confirmed that there is a rule present that allows all for LK.

He removed and reinstalled, rebooted, etc, etc, but always with the same result. His modem (G3) indicates no activity.
Very weird as LK never had issues on any of my puters, from XP to W7 64-bit.

Any tips or suggestions most welcome.