Since nobody (except for Martin Ireland) appears to have read (or at least told so) my final reply to the IER and Viewer.pm thread I'm now opening an new thread here announcing my latest IER update solving at least the image display issue some people encountered with recent releases to get at least some more feedback, I hope - or should I say I'm afraid?
I can now at least tell that IER's image display issue has been solved after detecting a Windows "feature" I didn't ever expect to exist at all in combination with IE's special handling of long filenames with blank spaces that exclusively affects only MS browsers as far as I can tell. Whether the browser submenu issue has finally been fixed (some users just don't seeing it at all) I still can't tell for sure since the final tests still have to be done, but I have been redesigning its handling completely. If your'e interested in more details please take a look at IER's version history, I'll just provide a link to the ominious Windows feature here which even most people who encountered the image display issue very likely don't know having been struck by. Here's the download link, BTW ...
PS: Disabling 8.3 filenames on some systems (by sys-admins?) and using percent encoding (by me) for blanks in long filenames caused IE & IER to fail in loading images properly, to make a long story short ...