setup cannot find proofing.en-us\proof.en\

Trying to load my recently bought Office Home and Stedent 2007. I get less
than a 1/4 through when I get a pop up that states "Setup cannot find
proofing.en-us\proof.en\proof.cab. Browse to a valid information source.

I have searched through the internet, and while I have seen numerous issues
the same as mine, I have found no resolution.

Please help.

[RTAdams89]

I had this same problem. Like you, I discovered lots of info about it online, but no real solution.

I ended up searching my computer for "proofing.en-us" and then pointing the installer to that location.

I wrote up more detailed instructions here: Solution: “Cannot find Proofing.en-us” error when Installing Office 2007 | RyanTAdams.com

I had to restore Vista on a Gateway PC.
Afterwards I was re-installing Microsoft Office Plus 2007 and encountered the same problem of "Proofing.en-us" not found. I would search for it and could locate on the installation CD. When I would cut/paste the folder path and submit I would receive "Invalid Path".

Fix:
I checked the CD (It had a slight gash on the very edge).
I cleaned the CD.
Inserted it in a second CD drive on the same machine and start the install again.
Worked fine that time.

I plan on making a copy of the CD if possible.
I do not know if Microsoft will replace the CD (but I am going to ask).
Good Luck!