First we need some more info:
1) What operating system are You using 2) Wchich version of GIMP - do You mean Gimp 2.0 ? Or Gimp 2.6 or 2.8 or something else.

I can only gues that You mean Gimp 2.8 on some M$ Windows system ... probably You deleted some system files before and now system don't know what to remove.
It's just gues i've forgoten where i lost my crystall ball.

However if i guess correctly what happened, one proven way was to manually clean registry, and later remove unnecessary files.

2012/12/2, Stan Dawson :

----- Original Message -----
From: Stan Dawson
To: gimp-user-list-owner@gnome.org
Sent: Saturday, December 01, 2012 12:11 PM

I am trying to remove GIMP2 from my computer, but when I click on REMOVE, I get a message error stating that File C is missing and it does not remove.

Please tell me how to remove it. I don't use it and it is taking up too much space.

Thank you,

Stan Dawson PO Box 122
Kilmarnock, Virginia 22482-0122

Von: "Stan Dawson"

I am trying to remove GIMP2 from my computer, but when I click on REMOVE, I get a message error stating that File C is missing and it does not remove.

Worth a try:

Install it again with the same installer files as the version you've got now - this should restore any missing files - and then remove it.

Regards, Michael

-----Message d'origine-----
From: Michael Schumacher
Sent: Sunday, December 02, 2012 8:22 PM To: gimp-user-list@gnome.org
Subject: [Gimp-user] Removing GIMP fails (was: Re: Fw:)

Von: "Stan Dawson"

I am trying to remove GIMP2 from my computer, but when I click on REMOVE, I get a message error stating that File C is missing and it does not remove.

Worth a try:

Install it again with the same installer files as the version you've got now - this should restore any missing files - and then remove it.

Regards, Michael
-----------
As far as I remember, GIMP does not write anything in the regedit or in Windows so it is possible to uninstall it just by removing the directory with everything inside in the program files whether in Program Files (X86) or in Program Files depending where and which version has been installed. Then you have to go in C:\Document and Settings (XP) or in C:\User (Win7) then under the name your are using to find the directory .gimp-2-x and erase it.
Then you have to erase the shortcuts. Now you are clear and clean then you have to erase everything in the basket. Regards
Paul