it's urgent

Question

Hi
I created a webpart using a simple user control in framework 3.5 environment and deployed into sharepoint server,It works fine for me.
When I tried to create a webpart with another user control wchich
is using asp.net 3.5 extender control.
I got error like this
error CS0115: 'ASP.somecontrol_ascx.cs.FrameworkInitialize()': no suitable method found to override

The extender control code and the common code that is being shared by web parts are created in seperate web part project and compiled and deployed the dll in the bin folder of Sharepoint main site. The javascript in which Extender control is being initialized is also placed in the web project.

I appreciate to hear from you guys.

Thanks
sunil