Skip Condition Formatting If Sum of Column Equals Zero

Hey Everyone,

I'm running into a problem with trying to stop conditional formatting if there are no values in a column. If even one cell in the column has a value, I need the conditional formatting applied to all cells(blanks included). The column in question is column V.

Original formula: =VLOOKUP(A5,'NF Distribution'!$A:$U,19,0)<>V5

Modified formula: =IF(SUM(V5:V494)>0,VLOOKUP(A5,'NF Distribution'!$A:$U,19,0)<>V5,"")

Attached is my excel file.

Any help you could give me would be appreciated!

Thanks