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Summation Problem w/ 5.0


Has anyone else had this problem with the new version?  I have created
multiple lists with multiple elements, and I am trying to sum all
elements of all lists.  As output I don't get a single value; instead
I get several numbers separated by a plus sign.  For example, instead
of Mathematica giving "2" as output, I get "1+1".  I'm pretty sure my
code is correct, because if I stop my sum at a given element, I get a
single number, but if I continue beyond that element I get output as I
have described above.

(FYI, I'm using Mac OSX, version 10.2.6).

Thanks in advance for any help.
~Andrea


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