installer stopped working for portable C D on Windows Vista

I attempted to run the installer for a portable Comodo Dragon on Windows Vista, but the installer stopped working and had to be closed. That was the error message Windows gave. Comodo Dragon stopped and had to be closed. I tried to install into C:\portable_dragon\Comodo\Dragon, and had some trouble creating this path entered into the installer path selection field.

What are the rules for making a portable installation of C D onto Windows Vista?

Hi string_game,
It should create that path no problems (Just tried it).
Make sure all installed versions of Dragon are closed before trying to install the portable version.