David, I have uploaded, to SDSC ftp server, dxexec executable for DX-4.0.9 for RedHat Linux 6.x.
Please replace the dxexec executable in DX-4.0.9 for RH Linux 6.0 with this one. You may also consider providing only dxexec executable to users who have already downloaded DX-4.0.9 for RH 6.x. Sorry for the inconvenience. Regards Suhaib
