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1. belenenses
   Member
   Posted 5 months ago #

   Hi,

   I get this error message when trying to automatically upgrade via the Dashboard. Never had problems upgrading before.

   See:

   Fatal error: Cannot redeclare class Plugin_Upgrader in /home/walki12/public_html/wordpress/wp-admin/includes/class-wp-upgrader.php on line 593

   I'm sure there's a simply solution?

   Thanks,

   B

2. richardpd
   Member
   Posted 5 months ago #

   I have the same error on trying to update to WP3.3
   Fatal error: Cannot redeclare class Plugin_Upgrader in.../wp-admin/includes/class-wp-upgrader.php on line 593

   I'm sure too there is a simple solution but what?

   All my plugins are updated but I suspect it may be an issue with a plugin.

   So look forward to help here....

3. richardpd
   Member
   Posted 5 months ago #

   OK-After somewhile I solved my problem with this error:
   Fatal error: Cannot redeclare class Plugin_Upgrader in.../wp-admin/includes/class-wp-upgrader.php on line 593

   It was due to some plugin problem-but what? I have about 60 plugins on my WP multisite (way to many!).

   To fix the error I deactivated all plugins and then updated to WP3.3 (after backup of course!?). The update then worked! Then I reactivated all plugins & so WP3.3 is now installed. All good. Hope this helps previous poster & anyone else with this issue/error...

4. belenenses
   Member
   Posted 5 months ago #

   Hi

   Thanks for your input and glad to hear you managed to resolve your problem. For me that won't work, because I am still building my site in a sub-directory and as such have NO plug-ins at all on my site!

   Can anyone else help?

   Thanks,

   B

5. angelicaminx
   Member
   Posted 5 months ago #

   I can't even login into my site to deactivate plugins! I keep getting this error too after the upgrade to 3.3. HELP!!

6. angelicaminx
   Member
   Posted 5 months ago #

   Fatal error: Call to undefined function is_rtl() in /home/minx/public_html/wp-includes/general-template.php on line 2102

   Mine says this (see above)

7. belenenses
   Member
   Posted 5 months ago #

   Hi,

   I just logged into my dashboard and noticed that there's a new version of my current theme to upgrade. I wouldn't mind betting that once I upgrade that, the WP theme will upgrade okay.

   I'll do it this evening and report back!

   B.

8. belenenses
   Member
   Posted 5 months ago #

   Hi again,

   Yes, just as predicted. My problem was related to the requirement of a new Theme update before updating WP. I updated the theme and then WP updated fine.

   Hope you resolve your issue as simply as that.

   B

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