Hi Alex,
The admin folder is still there (with two files in it) and so is the PHPExcel.php.
– Sander
Hi Alex,
No, it does not exists, as the error would indicate. That means somehow it gets deleted on my server after a few hours?! Any idea how that’s possible? I don’t really have any file-clean-up tools running or anything that could flag it as a false positive for a virus or something.