IS item has already been added. Key in dictionary: 'captcha.allowedcharactersregex'

Interprise Suite Version: 2007 SP5.3

Problem:

Error message on e-commerce site:

Server Error in 'X' Application.

Item has already been added. Key in dictionary: 'captcha.allowedcharactersregex'  Key being added: 'captcha.allowedcharactersregex'

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: Item has already been added. Key in dictionary: 'captcha.allowedcharactersregex'  Key being added: 'captcha.allowedcharactersregex'

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentException: Item has already been added. Key in dictionary: 'captcha.allowedcharactersregex'  Key being added: 'captcha.allowedcharactersregex']

   InterpriseSuiteEcommerceCommon.Global.m_Application_Start(Object sender, EventArgs e) +492

   InterpriseSuiteEcommerceCommon.Global.Application_Start(Object sender, EventArgs e) +9

Solution:

Duplicate e-commerce AppConfig entries exist in table WebStoreAppConfig.  Manually delete duplicate entries from the database.