vielen Dank an Ulf K. der mir folgendes Code Candie geschickt hat.

// argh – MS Office sucks. Using big letters in the first
// column (“ID” instead of “id”) brings Excel 2007 to dance
// around “your csv-data format is not correct … na na na”
// using more than 1 hour to find this “problem”, because
// MS Excel can´t handle big letters in the first row as
// first value! What a poor software…