I was having problems with the image browser giving the javascript Line 119 Object Not Found error in IE. I could upload files fine, but not view them in the browser. After trying the various options for fixing the problem on here with no luck, I stumbled on what was causing the problem for me - some files that had been manually loaded into the directory with invalid names (they contained dashes "-" ). Renaming these fixed the issue. These also caused the file list to show up blank in Firefox.
I'm sure there are other things that will cause the Line 119 error, but this is a nice simple one to check first.
I'm sure there are other things that will cause the Line 119 error, but this is a nice simple one to check first.