Running a CA Directory provided DXcertgen command line tool/utility to generate either the DSA certificates (.pem) files OR generating a CSR (Certificate Signing Request) results into failure on Linux systems reporting Segmentation Violation.
It is possible that you have a file only with a number as a filename under $DXHOME/config/servers folder.
e.g. you may have (under $DXHOME/config/servers folder)
Here that '1' is causing this problem as DXcertgen tool is expecting a proper filename. Delete this misleading file from this location OR move it to another location to resolve this problem.