Upgrade to 1.0.1 causes wp-admin/plugins.php to return blank page

Sorry, that’s upgrade to 1.01, not 1.0.1.

Also breaks Dashboard -> updates page, that is:

wp-admin/update-core.php

That now also returns blank page.

I was able to resolve this by:
1) deleting plugin files from plugins folder
2) manually removing formbuilder settings from wp_options table in DB
3) renaming plugins folder and verifying plugins.php displayed as expected
4) naming plugins folder back to plugins

This restored a working plugins.php with all plugins shown as deactivated.
Re-activated all plugins OK (formbuilder completely gone of course).

Note that removing formbuilder plugin files, by itself, did NOT resolve this. I also tried restoring an older formbuilder version, and that did NOT resolve it either.

Hi jschinnerer,

Sounds kinda like there’s another plugin or theme that this is conflicting with.

James W.

If you read all the details – that’s not possible.
Unless the plugin causing the conflict is the 1.01 version of FormBuilder itself. Nothing else changed but that, at that point in the process. All other plugins were the same prior to and after the upgrade, no problems with plugins.php until after the upgrade.

Something is tweaked on that install since the upgrade, such that *any* plugin upgrade causes the blank plugins.php page.

The consistently reproducible workaround is steps 3-4 in my previous post above (steps 1-2 were probably not necessary in the first case either but I did them as part of standard procedure for troubleshooting this).
That is, the workaround is rename the plugins directory, reload the plugins.php page (which then works), change the plugins directory name back to ‘plugins’, and reload plugins.php page again, at which point it still works, and no issues continuing with reactivating plugins.

Very strange, since the code in place when it fails (after upgrade, before workaround) is the same as the code in place when it works, after the workaround.