Well I gave it a few more tries with FIU and made sure the program closed by its self. This time I got a 826 MB file.

Looks like I am possibly running out of RAM resources or intermediate space during the unlock process. I did not use the 3GB switch. I am not going to bother trouble shooting and trying any more on this IMG file as the product does lack a lot of detail in lakes I expected it to show detail on especially in Homeport.

FIU works very well with smaller images on my computer.

Its all good since the end result is good. I'm going to put it to rest now.

Thanks for all the input and help.