Here is a summary of what we now know: The only package in play now is Cepstral_William_x86-64-linux_6.2.3.873.tar.gz
It was downloaded with wget from a link given to me from support at cepstral.com. The package was downloaded to Debian Stretch on a dual boot system where Arch Linux is the secondary OS. It was installed on Debian, and after problems were discovered, was moved to Arch and installed there, where it ran without error. The output of file for the swift.bin executable was identical on b oth systems, and was: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.9, not stripped, with debug_info I obtained a checksum on each swift.bin, and those too were identical, each one was this: bf67fecfbae44e68f2c6d669fbb65512e197db87 /opt/swift/bin/swift.bin By "identical" I mean I saved each output to a file and used diff to compare them, no output was produced. The hardware is a Dell Optiplex 780 with plenty of ram and CPU power, Debian is using kernel 4.9.0, and Arch is using 4.9.11. Swift executes without error on Arch, but on Debian where I want to use it, it reports a bad format for swift.bin, which ldd also describes an not an executable ffile. Sorry about earlier top-posts, I'm new to the list and have bad habits. Chuck -- When you've seen one shopping center you've seen a mall. Willoughby Ohio Temperature 43°F Conditions Mostly Cloudy The Moon is Waxing Crescent (5% of Full)