An add-on tells me that I have another version of Firefox I did.

I have the latest version of Firefox (5.0.1) and went to download an add-on (Scrapbook by Monday). He said that the current version of their add-on (1.4.7) is not compatible with the version I have, they tell me is 3.0.11. I know I have Firefox 5.0.1, as I downloaded it again today. Why is this?

The User Agent provided with your post (used to identify the browser you are using) shows Firefox 3.0.11:

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729) FBSMTWB

See http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default

See also User Agent (Wikipedia)

If this answer solved your problem, please click 'Solved It' next to this response when connected to the forum.

The problem could be due to this "FBSMTWB" at the end of your User Agent

Not related to your question, but...

You must update some plug-ins:

Tags: Firefox

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