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The session/window data is corrupted: aStr is null

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I keep getting that when I load firefox just now. I'm assuming firefox updated cause it went through the whole checking if my addons are applicable thing it does every time it updates. And I got this message afterwards today. And I'm kinda worried. What does it mean and how can I fix it?

I keep getting that when I load firefox just now. I'm assuming firefox updated cause it went through the whole checking if my addons are applicable thing it does every time it updates. And I got this message afterwards today. And I'm kinda worried. What does it mean and how can I fix it?

Alle svar (2)

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hello AlcyoneBlack, this is likely caused by an outdated addon (probably session manager). please see if updating it to version 0.8 can resolve the issue: https://addons.mozilla.org/firefox/addon/session-manager/versions/?page=1#version-0.8

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did that and it worked thanks! I actually have them to automatic updates. Don't know why a lot of my addons hadn't updated if it's on automatic updates. Oh well. Thanks for the help!