Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Restoring a session only shows blank tabs, same with opening last closed tab

  • 1 reply
  • 3 have this problem
  • 2 views
  • Last reply by aktai

aktai
aktai
more options

I opened a link from Trillian in the middle of loading a session with the Session Manager add-on, and now none of my sessions will show anything when I start Firefox or when I reload a session using Session Manager. The number of tabs that the session loads is correct, just none of them have anything except New Tab and nothing in it.

Additionally, the closed tabs list doesn't update, or when I load the session using Session Manager, trying to open a closed tab will open another blank tab and turn that entry in the closed tabs list into a blank tab.

Error console shows this when I open any page: > Frame Script init > "Cu" is read-only

And this when I close any page: > Warning: attempting to write ##### bytes to preference recentlyClosedTabs. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file.

I've tested this with and without Session Manager enabled, and it's the same behavior for both session restores (correct number of blank tabs). I've tested in safe mode and sessions appear to work normally (I can see closed tabs and restore them).

Also, Session Manager saves the correct titles and URLs of the tabs when it saves to its external storage, even though they're "blank", so I suspect the issue is something preventing the writing of an important file in my Firefox profile, but I'm not sure what or how to fix it.

Lastly, Session Manager's add-on page says it might help to record the error console while disabling/enabling the add-on, so here is that log:

Disabling: Duplicate resource declaration for 'specialpowers' ignored. chrome.manifest:32 Duplicate resource declaration for 'gre-resources' ignored. chrome.manifest:34 Duplicate resource declaration for 'services-sync' ignored. components.manifest:168 Duplicate resource declaration for 'services-common' ignored. components.manifest:170 Duplicate resource declaration for 'services-crypto' ignored. components.manifest:171 Could not read chrome manifest 'file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/chrome.manifest'. Duplicate resource declaration for 'pdf.js' ignored. pdfjs.manifest:1 Duplicate resource declaration for 'cookieswap_res' ignored. chrome.manifest:3 Duplicate resource declaration for 'cookiesmanagerplus' ignored. chrome.manifest:3 Duplicate resource declaration for 'personas' ignored. chrome.manifest:7 Duplicate resource declaration for 'abduction' ignored. chrome.manifest:2 Ignoring obsolete chrome registration modifier 'xpcnativewrappers=no'. chrome.manifest:16 Duplicate resource declaration for 'dta' ignored. chrome.manifest:2 Duplicate resource declaration for 'dwhelper' ignored. chrome.manifest:75 Duplicate resource declaration for 'tabmixplus' ignored. chrome.manifest:3 Duplicate resource declaration for 'sqlitemanager' ignored. chrome.manifest:7 Duplicate resource declaration for 'greasemonkey' ignored. chrome.manifest:15 Could not read chrome manifest 'file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/browser/extensions/%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D/chrome.manifest'. 1417333357797 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: userstyle 1417333357798 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: greasemonkey-user-script

Enabling: 1417333394803 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: userstyle 1417333394804 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: greasemonkey-user-script

I opened a link from Trillian in the middle of loading a session with the Session Manager add-on, and now none of my sessions will show anything when I start Firefox or when I reload a session using Session Manager. The number of tabs that the session loads is correct, just none of them have anything except New Tab and nothing in it. Additionally, the closed tabs list doesn't update, or when I load the session using Session Manager, trying to open a closed tab will open another blank tab and turn that entry in the closed tabs list into a blank tab. Error console shows this when I open any page: > Frame Script init > "Cu" is read-only And this when I close any page: > Warning: attempting to write ##### bytes to preference recentlyClosedTabs. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. I've tested this with and without Session Manager enabled, and it's the same behavior for both session restores (correct number of blank tabs). I've tested in safe mode and sessions appear to work normally (I can see closed tabs and restore them). Also, Session Manager saves the correct titles and URLs of the tabs when it saves to its external storage, even though they're "blank", so I suspect the issue is something preventing the writing of an important file in my Firefox profile, but I'm not sure what or how to fix it. --------- Lastly, Session Manager's add-on page says it might help to record the error console while disabling/enabling the add-on, so here is that log: Disabling: Duplicate resource declaration for 'specialpowers' ignored. chrome.manifest:32 Duplicate resource declaration for 'gre-resources' ignored. chrome.manifest:34 Duplicate resource declaration for 'services-sync' ignored. components.manifest:168 Duplicate resource declaration for 'services-common' ignored. components.manifest:170 Duplicate resource declaration for 'services-crypto' ignored. components.manifest:171 Could not read chrome manifest 'file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/chrome.manifest'. Duplicate resource declaration for 'pdf.js' ignored. pdfjs.manifest:1 Duplicate resource declaration for 'cookieswap_res' ignored. chrome.manifest:3 Duplicate resource declaration for 'cookiesmanagerplus' ignored. chrome.manifest:3 Duplicate resource declaration for 'personas' ignored. chrome.manifest:7 Duplicate resource declaration for 'abduction' ignored. chrome.manifest:2 Ignoring obsolete chrome registration modifier 'xpcnativewrappers=no'. chrome.manifest:16 Duplicate resource declaration for 'dta' ignored. chrome.manifest:2 Duplicate resource declaration for 'dwhelper' ignored. chrome.manifest:75 Duplicate resource declaration for 'tabmixplus' ignored. chrome.manifest:3 Duplicate resource declaration for 'sqlitemanager' ignored. chrome.manifest:7 Duplicate resource declaration for 'greasemonkey' ignored. chrome.manifest:15 Could not read chrome manifest 'file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/browser/extensions/%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D/chrome.manifest'. 1417333357797 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: userstyle 1417333357798 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: greasemonkey-user-script Enabling: 1417333394803 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: userstyle 1417333394804 Services.Metrics.Provider.org.mozilla.addons WARN Add-on type without field: greasemonkey-user-script

Chosen solution

OK I managed to fix this myself so I'll post what I did here:

The problem was caused by TabMixPlus which also has its own session manager, so I had to reinstall that addon.

I also had to disable/re-enable every addon and delete all my cookies/cache because of some other strange issues that were happening, but whoever is reading this might not need to do that if they don't have other problems.

Read this answer in context 👍 1

All Replies (1)

aktai
aktai Question owner
more options

Chosen Solution

OK I managed to fix this myself so I'll post what I did here:

The problem was caused by TabMixPlus which also has its own session manager, so I had to reinstall that addon.

I also had to disable/re-enable every addon and delete all my cookies/cache because of some other strange issues that were happening, but whoever is reading this might not need to do that if they don't have other problems.