The link you gave isn't for solving your problem. It merely shows how to hot link to pictures on the internet instead of embedding them.
When you save a mail in HTML format, the images files are saved in a separate folder beside the file. For example, if you save as a.htm, there will be a seperate a_files folder.
If you save in mht format, the image files and text are stored together inside the file. In both cases, there should be no problem viewing the file.
Is the folder missing? have you check the links inside the html file by editing it with notepad?
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