Nant,
Thanks for checking. I went to the forge site you had linked, and there are no language files to download.
I went and downloaded the Portuguese plugin that apparently works, and works when the FileAttach plugin is not enabled.
www.joomlapolis.com/component/option,com_mtree/task,viewlink/link_id,439/Itemid,55/
I uninstalled the old plugin, and installed this one. I didn't touch a single file, and when the fileattach plugin is not enabled, the language works great. If it wasn't UTF-8, wouldn't it be failing normally as well as when the fileattach plugin is enabled?
What would that fileattach be calling from that language file?
The languages all work great when the fileattach plugin is turned off. There has to be something in there that's conflicting somehow.
As far as those chars that were on the page, those don't appear now that I have reinstalled the language file for Portuguese.
Thanks,
Eric