Imager is not finding my 2.12.25 Auto Nooter file

I have downloaded the Win imager to my laptop, and unzipped and opened it (to My Downloads folder).
I have downloaded Auto Nooter 2.12.25 because my Nook color is software version 1.0.1.
I have noted and confirmed that the zip file which is on my Sd card reader (Dynex) is located on my Windows 7 "H:" drive.
I unzipped the Auto Nooter using "7-Zip" and performed "Extract Here" unzip
When i open the Imager i am able to select the nooter file and it appears in the selection "Image File" window of Imager.
In the device dropdown of Imager the "E:" drive is default value, the other value is "H:" drive and i select that (H:) since that is where the Auto Nooter 2.12.25 file is saved.
When i click the Write button in the Imager i get a error pop up: "Image file cannot be locatated on the requested device".

Hopefully i've put down all the details, can anyone help who has had and resolved this error?

*Edit to original; i've since taken the instructions to my work PC, and it works. My Dell latop was the fail. awww, too bad Dell!

thank you
-Mike