From the website...
"Why doesn't it work with Internet Explorer v7?
For an FTP connection, IE presents the Viewer's HTML file as a text file, instead of rendering it as though it were received from a web server. One could argue that is reasonable behavior but it does not help remote access to the screenshots on a server lacking a web server. Also, some web browser concepts — for the curious, DOM's "undefined" — are not supported by IE but they are employed by the Viewer. Alternatives exist but the time has not been invested to implement them."
Folks, we should take this Viewer's specifics to the MSG forum for it, no?
I'm not sure what the "control panels" are so it's tough to answer questions about them.