Web part maintenance page error on new deployment

Hi Everyone,

I am getting the following error when I drop custom web parts on a page.  This is a new environment that was created recently. The logs are not much help with just the following error...

Detected use of SPRequest for previously closed SPWeb object.  Please close SPWeb objects when you are done with all objects obtained from them, but not before.  Stack trace:   
 at Microsoft.SharePoint.SPFieldCollection.get_DisplayNameDict()    
 at Microsoft.SharePoint.SPFieldCollection.GetFieldByDisplayName(String strDisplayName, Boolean bThrowException)    
 at ICM_DropDownLinks.ICM_DropDown_Links.LoadDropdownValues()    

Any suggestions would be appreciated!

Thanks,
Hyde

There is nothing more difficult to take in hand, more perilous to conduct or more uncertain in its success than to take the lead in the introduction of a new order of things.