I realize I ran the code today and it worked, so this 3 year old post provided a helpful solution... And now I'm wasting time replying to a snarky comment:/ Are you trying to be some kind of SAS-troll?
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I think you are right. XLSX might require 9.4. BTW if you switch to using CSVs then you need to use PROC IMPORT. There is no CSV engine for the LIBNAME statement.
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