The program I have that takes and uses the csv files started to crash when I tried to open the csv file. This is new behavior. The only thing I can see is that when I download the csv file using a MAC, the system (mine, not yours) seems to put a code in the top left header.
I can download the same file on a windows machine with no problem.
I can't even find the code using Textpad to edit it out. EXCEL shows the code, but EXCEL apparently makes some change to the file on "SAVE AS", that makes it unuseable in my program.