Hi There,I am using excel 2013 and I am setting up my first large power pivot table 150,000 lines. I am hoping someone can provide some insight into my problems as I can't work it out. I am trying to set up a very simple "sum" measure in power pivot. First one worked perfectly fine. I then tried to set up a second one and I keep getting a Calculation error message. The function SUM takes an argument that evaluates to numbers or dates and cannot work with values of type String . If I understand this error message, it is telling me I am trying to add a string but I have checked and they are definitely numbers. I really don't know what to do. Any suggestions? I am wondering if this file would be corrupt somehow??
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