Error upon adding configuration (After Katmai uninstall)

Hi guys. This problem is somewhat related to my other problemhere. This time, whenever I add a configuration file to a package I get the an error

Constructor on type 'Microsoft.DataWarehouse.Wizards.WizardInitializer' not found (EnvDTE).

All these weird messages came out after I uninstalled Katmai June CTP. I already employed similar solutions suggested by the kind people in the thread of my first problem. I'm just not sure which wizard file and registry key to modify.

[714 byte] By [u_r_twisted] at [2008-2-25]
# 1
It was fixed after I installed July CTP
u_r_twisted at 2007-10-2 > top of Msdn Tech,SQL Server Katmai,SQL Server Katmai Integration Services...

SQL Server Katmai

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