It's strange... all seems correct in the log, the plugcfg folder exists and the installer can copy files on it.
Can you see 'forest.cfg' at C:\Documents and Settings\colincreamer.PARKHOOD\Local Settings\Application Data\Autodesk\3dsmax\9 - 32bit\enu\plugcfg ?
If you are not using the local profiles of Max 9, i suggest you disable it: edit 'InstallSettings.ini' file from Max root folder, and set
With this parameter, Max doesn't use the local user folders, searching the 'plugcfg' directory at <maxdir>/plugcfg, as in previous Max versions.
Must be some problem with your local profile, but is difficult to find it without having access to the computer.