Have you maybe configured that user ID as a forced SuperAdmin?

Check for forcedsuperadmin in config-default.php and config.php

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=38791

I have added a fix so that in the next version a proper error should be shown.

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=38792

@c_schmitz: Thank you for your hint and the fix for more informatoin.

But all I have in config-default.php is line

674:$config['forcedsuperadmin'] = array(1);

The user I try to delete is ID 2.
Maybe an array key shift?
0 => 1 ?
1 => 2 ?

Sorry - no, the suggestion with the shift key makes no sense when you look at it:

grep -R forcedsuperadmin
config/config-defaults.php:$config['forcedsuperadmin'] = array(1);
helpers/update/updatedb_helper.php: $forcedSuperadmin = Yii::app()->getConfig('forcedsuperadmin');
models/SettingGlobal.php: 'forcedsuperadmin', // This is for security
models/User.php: / OR are inside forcedsuperadmin config */
models/User.php: $criteria->addInCondition('t.uid', App()->getConfig('forcedsuperadmin'), 'OR');
models/Permission.php: return in_array($iUserID, App()->getConfig('forcedsuperadmin'));

Can you try to manually apply the fix (the small one) and check if you get a different error?

�This fixed my issue, thank you @C_schmitz.

I was given the option of transferring the existing surveys for the user to another user.

Thank you!

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image.png (6,607 bytes)