Error When Trying to Convert or Save Excel File as .csv

Has anybody run into this problem? Even if I run a super simple workflow: (1) Get file, (2) Open .xlsx, and (3) Save Excel Workbooks as “Test” on Desktop as CSV – I get the error on the last step of “Microsoft Excel got an error: Parameter error.” I tried different sizes and files and they all say the same thing, though everything works fine if I save a sheet as a normal .xlsx or something – for some reason I just keep getting errors when I attempt to use a csv. Do I have to do something differently?

Browser: Chrome 46.0.2490.80
Operating System: Mac OS X (10.10)

I have the same problem when trying to save in “Excel XML file format”