cant read from a file

[EinRainerZufall]

I have two xlsx files from which i can read one normally but if i try to read from the second file i get a parser error. Can anybody explain me what's the difference of the two files? able to read.xlsx unable to read.xlsx

[EinRainerZufall]

I found a solution for me in the unable to read.xlsx file are simple calculations I changed them to normal numbers and jet it work. but is this normal that xlnt can`t read .xlsx files that contain calculations? @tfussell