I can not add attachments to my assignments, usually a picture of a computer will come up and I can browse to find the file I need to attach, now either a black square or Java comes up, but I can not get to my files. Help!

I need to know how to fix my add attachments, it has quit working.

Your user agent seems to have been corrupted somehow.
You can check the general.useragent prefs on the about:config page.
You can open the about:config page via the location bar, just like you open a website. Filter: general.useragent
If general.useragent prefs are bold (user set) then you can right-click that pref and choose Reset.
See :
[[Web sites or add-ons incorrectly report incompatible browser and Finding your Firefox version]]
See :
[http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default]

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