FTP Voyager scheduler download problem

Hello,

I hope to get some help with this problem. I try to use FTP Voyager on a Windows server, to automate some crucial tasks.

The schedule is entered, looks fine. It should synchronize a FTP-folder to a local folder, and it downloads all files (.txt files) correctly, except the ones that are really important, the Excel-files. That is, they are downloaded, but remain empty (0 Kb). When I try to do the same thin within FTP Voyager, i.e. Not with the Scheduler, everything runs fine. What could be the problem? It drives me mad.

Thanks in advance!