Profile Enhancements - Quick Account Switch

I no longer support my hacks. Please feel free to update them and release new versions elsewhere as long as I get the credit for the original modification.

/*===================================*\
|| Quick Account Switch
||
|| Author : Anton Kanevsky
|| Works on : vBulletin 4.0.x
|| Released : Mar 02, 2010
||
|| Time required to install: ~30 seconds
|| Difficulty: easy
\*===================================*/

DESCRIPTION

This modification gives users the ability to easily switch between linked accounts. Accounts can be linked by administrators via admincp or by users via usercp as long as these users know the passwords for both accounts. Optionally, you can disallow users to link and unlink accounts from the usercp.

STATISTICS

File Uploads: 1
Products to Install: 1


FEATURES

• Adds AdminCP and UserCP controls to link and unlink accounts.
• Allows to easily switch between linked accounts from the navbar.
• Allows to disable the public UserCP controls and leave just the AdminCP part.

VERSION HISTORY

2.0.1
[F] Fixed a minor bug.

2.0.0
[+] Hack ported to vBulletin 4.0.x.

1.1.0
[+] Compatible with vBulletin 3.5.x - 3.8.x.
[+] Removed all template modifications.
[+] Added option to disable usercp controls for linking accounts.

1.0.1
[+] The modification is now officially compatible with vBulletin 3.6.
[+] The hack has been optimized and now performs much less queries than before.
[+] Users now can link accounts without an administrator as long as they know the passwords for both accounts.

1.0.0
Initial Release (Port of Quick Account Switch by Ianomed)

The installation manual is contained within the attached file.

IF YOU LIKE MY HACK, PLEASE CLICK INSTALL

[concepts]

Originally Posted by Valter

This is to fix navbar link in vB 4.2.1.

I've changed version info to 2.0.11.

Just installed your version, but I get the following error, which stops me from accessing my site and admincp
It adds the link to the navbar, and allows me to create links, however once I go to click on an account to switch, I get the below error.

[] operator not supported for strings on line 53 in /home/fin5nlwhlxs5/public_html/includes/class_bootstrap.php(433) : eval()'d code
#0 /home/fin5nlwhlxs5/public_html/includes/class_bootstrap.php(433): eval()
#1 /home/fin5nlwhlxs5/public_html/includes/class_core.php(4391): vB_Bootstrap->process_templates()
#2 /home/fin5nlwhlxs5/public_html/includes/class_core.php(4349): vB_Template->__construct('qas_switchbit')
#3 /home/fin5nlwhlxs5/public_html/global.php(29) : eval()'d code(73): vB_Template::create('qas_switchbit')
#4 /home/fin5nlwhlxs5/public_html/global.php(29): eval()
#5 /home/fin5nlwhlxs5/public_html/forum.php(67): require_once('/home/fin5nlwhl...')
#6 {main}