I see in that error message mentioned x64. Do you have Vista x32 or x64?
Could be you are attempting to install an incorrect version for your operating system
Just a guess!
I have two pc's both using Firefox (new version). I tried to install the Comodo firewall today and both got the same error repeatedly. After I download the software and click on it in my download box it opens a winzip extractor window and appears to run correctly. Then I get an error message that says
"error o running command.\cfp_setup_18.104.22.1688_xp_vista_x64.exe" Help please?