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Can see UnMHT with 3.6.18 but can't find it under 5.0.1!!!

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I frequently use UnMht to create MHT files. I think FireFox and UnMht are the only properly working combination on the net which is great for FireFox and the author.

Problem is that with 3.6.18 (under Win XP) UnMht is there under "File" as "Save as MHT".... BUT under 5.0.1 and Win7 FireFox tells me the add-on is there but I cannot find how to activate it!! I would have expected to find it under "Page" (and Save As MHT) but it's not there. Certainly, the operational simplicity one got under 3.6.18 seems to have gone missing!

I frequently use UnMht to create MHT files. I think FireFox and UnMht are the only properly working combination on the net which is great for FireFox and the author. Problem is that with 3.6.18 (under Win XP) UnMht is there under "File" as "Save as MHT".... BUT under 5.0.1 and Win7 FireFox tells me the add-on is there but I cannot find how to activate it!! I would have expected to find it under "Page" (and Save As MHT) but it's not there. Certainly, the operational simplicity one got under 3.6.18 seems to have gone missing!

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Do you have version 5.6.9 of UnMHT installed?? That seems to be the only version that is compatible with Firefox versions above 3.6.

I have always used the UnHMT button for Save as MHT, which automatically appeared in the Add-on Bar when I installed UnMHT in Firefox 5.0. To access the File menu items, when the Menu Bar is hidden and the orange Firefox button is showing, hit the Alt key, then the F key to open the Tools menu. BTW, there are additional menu items for UnMHT available in the Tools > UnMHT menu.