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.

Find Firefox version in old profile folder

  • 1 reply
  • 1 has this problem
  • 16 views
  • Last reply by cor-el

kaidin
kaidin
more options

I have just saved my profile folder from my computer just before it crashed. When I move the complete content a new profile to a brand new profile on a new computer I get a Danish error meassage about an udefinet entity and FF doesn't start.

XML tolkningsfejl: udefineret entitet Adresse: chrome://browser/content/browser.xul Linje 345, kolonne 5: <key id="key_quitApplication" key="&quitApplicationCmd.key;" </p>

^

I can see that the look of Firefox version on my new computer seems quite different from my old - indicating they are 2 different versions and hence there could be a problem just copying the content.

As my old FF was really a beloved fried I would like to have it exactly identical on the new computer. So here are the questions:

1 can I find information on the FF version in the old profile and then install the exact same version on my new PC? 2 if not, can anybody help identifying what causes the errormessage? 3 else I copy important files one by one as described in https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile?redirectlocale=en-US&redirectslug=Recovering+important+data+from+an+old+profile

I have just saved my profile folder from my computer just before it crashed. When I move the complete content a new profile to a brand new profile on a new computer I get a Danish error meassage about an udefinet entity and FF doesn't start. XML tolkningsfejl: udefineret entitet Adresse: chrome://browser/content/browser.xul Linje 345, kolonne 5: <key id="key_quitApplication" key="&quitApplicationCmd.key;" ----^ I can see that the look of Firefox version on my new computer seems quite different from my old - indicating they are 2 different versions and hence there could be a problem just copying the content. As my old FF was really a beloved fried I would like to have it exactly identical on the new computer. So here are the questions: 1 can I find information on the FF version in the old profile and then install the exact same version on my new PC? 2 if not, can anybody help identifying what causes the errormessage? 3 else I copy important files one by one as described in https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile?redirectlocale=en-US&redirectslug=Recovering+important+data+from+an+old+profile

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Could be a problem with an extension that isn't working properly in that new profile.

Note that it is normally not a good idea to transfer a full profile folder. Best is to copy only the files you really need and avoid copying files that contain file paths and extensions are best be reinstalled.

  • view-source:chrome://browser/content/browser.xul