On Wed, 30. Sep 2009, 11:32:25 -0500, d w wrote: > mpop.exe: cannot create directories > for\\servername\share\mpop\uidls.txt: Invalid argument This is a bug in the handling of special directory names on W32. It should be fixed now. Would you please try the binary at http://www.marlam.de/mpop-20090930.exe and let me know if this works? Martin