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I have the latest Firefox v 26 and everytime I try to add-on Lightning, I get the error message that it is not compatible with Version 26?

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"Lightning could not be installed because it is not compatible with firefox 26.0" is the message I get when I try to install the latest 2.6.4 version of lightning. I also tried the later beta test version with the same results. I am running Windows XP 32 bit with all the latest updates.

"Lightning could not be installed because it is not compatible with firefox 26.0" is the message I get when I try to install the latest 2.6.4 version of lightning. I also tried the later beta test version with the same results. I am running Windows XP 32 bit with all the latest updates.

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hello Waltair, lightning is a calendar-extension for the thunderbird mail client - it won't work in firefox...