Question: Summation error in an older package


I'm trying to use an older package but the results of the author's own example returns the error:

"Error, (in SumTools:-DefiniteSum:-ClosedForm) summand is singular in the interval of summation"

I don't have access to the source coude, but by looking at other similar issues it seems to be happening when "sum" function is used. Is there a way to force Maple use "add" instead?


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