4.2.0 install hangs on Windows 7 64-bit

[Rich McAllister]

Have 4.1.18 installed; download and run VirtualBox-4.2.0-80737.exe. Install appears to run ok, green bar goes to 100%, but then hangs with the network interfaces disabled. Canceling install from wizard has no effect, killed it from task manager. Rebooted to reactivate network interfaces. Started the installer again. Was notified a 4.1.18 install was in progress, offered to roll it back, did so; install then ran to about 80% green bar and stalled with network interfaced disabled -- but there were some odd flickers of little windows mapping and unmapping, so I let it run. Eventually network interfaces were enabled, the green bar completed, and the installation appears to be ok.

I ran the installer with the -l option, but never found a MSI log in appdata\local\temp. I enabled driver install logging, and the logs created are attached. setupapi.app.1.log is from the initial killed install, I see some lines decorated with ! at the end; setupapi.app.log and setupapi.dev.log are from the second, eventually completing, install.

[Rich McAllister]

Device install logs