Not able to save session/tab about sessionsync HOT 2 OPEN

Hi. Thanks for submitting the issue.
I know that some of the users experience this issue but sadly it's not triggered by the addon itself. It seems that after certain updates/changes in the user Firefox profile the addon will no longer work properly. There are multiple such issues but till now I was not able to identify any cause triggered by the addon code. That does not mean the issues are not real but the fact that most probably they are caused by Firefox user profile corruptions.
Personal reason for confirming this: Create any new firefox profile and you will notice that the addon works perfectly fine without any issue.

I estimate that around 10 to 20 users from thousands have this issue. Sadly as much as I've tested I was only able to figure out 1-2 of the several issues reported and they are well described in the #95 and #87.

What are possible solutions ?

1. Try with uninstalling the addon. Restart Firefox. Install again. Maybe it can fix something
2. Create a new profile and move all data from that one to the newer one.

Why I can't fix this
I would gladly fix it if I could. I simply have no way of triggering the issues on purpose. I don't understand what exactly causes the profile corruptions that triggers the bugs. As much as I looked over the code there seems to be no problem at all. Just think about it. The addon was not updated in a while, it worked perfectly fine, then suddenly does not work anymore. Since the addon code was not changes there are several possible causes:

• Firefox Addon SDK changes (most probably since there are a lot of bugs that I know are caused by it)
• Firefox profile corruptions (extremely probably, almost all reported issues are fixed if a clean profile is used)
• Incompatibilities with upgraded Firefox versions (but for almost all users the addon works fine so can't be)
• Incompatibilities with certain addons (can be verified but should not be the case ever unless something that manipulates tabs order during session restoring)

The only way I can go deep and find out the actual issue is to trigger the behavior myself (almost impossible to do) or to get a corrupted profile from someone and test on that one since I know for sure it will have those certain issues but since profiles hold personal user data (bookmarks, history, passwords, cache, etc) that can be done as well.

As much as I would love to point you to a clear solution, I really don't have one myself. I would gladly fix every single critical reported issues as this one if it was in my powers. Sadly I'm left with bad reviews, unsolvable issues and disappointed users all because of certain external errors that are not caused by the addon itself :(

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