The Error "The given key was not present in the dictionary. " Comes due Mismatch Handle number.
May be Probable reasons-
We are use create Instance of excel with the help of Excel object 1 and get the handle number. and passed above handle number to another excel object action.
so check you arecreating instance with same object and write code stage in same object. and pass handle number which is generated by same excel VBO Object.
I hope it will help you..!