@Nash from Coolutils:
The report produced by Print Maestro as HTML has a DOCTYPE that implies the HTML is 4.01 Strict, however the code generated does not conform to the standard. Browsers are very forgiving with poorly written HTML, but that should be used as an indication that the output is acceptable.
I know that you are using FlexCel 6.14 to produce the HTML, so maybe you can either get them to correct the problem, or manipulate the data they produce.
To get the output to be correct would not take very much effort:
Img Src data should not have broken lines. The lines could be long, but not broken up into multiple lines.
URLs cannot contain a space character; if a file in the report has spaces in its name, it forms an invalid URL. The spaces should be changed to percent20 (%20).
Ampersands cannot be used in an URL as a single character; they need to be changed to & to be processed correctly.
Would it be possible to consider these changes for the future?
I hope the above does not get processed such that what I am showing gets converted. Hopefully this is enough information that you can research the details.