I have posted this twice but it doesn't show up anywhere. The image I refer to below is here:

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Hi all,
on 1.2.2 file manager has stopped working.
I'd upgrade but the client uses a large number of modules, some which haven't been updated in a long time.
Everything had been working. The filemanager started dispalying smaller, all text is smaller, and the links no longer work. It does not display anything beside the attached image.
I have tried:
re-installing
uninstalling filemanager
re-installing filemanager
deleting the admin/lib/module:filemanager folders & re-uploading
debug mode
error logs
searching forums
Any advice?
I have turned on debug mode. IT displays nothing (as you can see) when I go to Filemanager.
I have also checked the error logs. They show only a missing favicon file. I can't imagine this is causing Filemanager to choke & die, but I did upload one. My error logs (produced by Apache) now show no errors, no matter what I do. (Navigate to that page--reload it--click the buttons--uninstall/install the module)
Thank you!
David