System.NullReferenceException: Object reference not set to an instance of an object.
at #rl.#xl.#i4()
at #rl.#xl.#O3()
at #Jh.#Lh.#jI()
at #Jh.#Lh..ctor(#Pn )
at #Rh.#Qh.#VI()
at #Rh.#Qh.#hq()
at #ok.#nk.#hq()
at #5j.#4j.#hq()
at #Tc.#Zc.#3r(Object , #2c )
at #Tc.#1c.#ns(#2c )
at #Tc.#1c.InsertItem(Int32 , #Sc )
at System.Collections.ObjectModel.Collection`1.Add(T item)
at #Gn.#In.#Zkb(Object , EventArgs )
at #Gn.#In.#pkb()
at #Gn.#In.#kr()
at #Tc.#Zc.#Yr()
at #Tc.#Zc.#9r(Object , EventArgs )
at #Tc.#3c.#ws()
at #Tc.#id.#Ku(Object , EventArgs )
at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at #Tc.#id.#fs()
at #Tc.#Zc.#fs()
at #Gn.#Fn.#Ojb(String )