CF 9 install hangs on "installing merge module"
Fought with this issue for a day. Running Win7 Pro, Avira Anti-Virus, Comodo Firewall and Threatfire.
Here is what I did to get it to work:
1) Disable firewall and antivirus - did not kill processes, just turned off in each control panel.
2) Use IE to download the installer BUT do not save, select RUN and install.
3) Installed fine - did same for the 9.0.1 update(remember to stop CF and IIS services before updating)
Could have been the anti-virus and/or firewall - or a corrupt installer was downloaded(tho I did this about 5 times). I also tried downloading installer and running as administrator - didn't work. Only selecting RUN instead of SAVE worked.
Remember to reboot afterward.
