By default, when Riviera-PRO is installed on a Linux platform such as CentOS, the SELinux feature is set to enforcing mode. As a result, users may encounter the above error message when executing the rungui command.
To temporarily disable enforcement on a running system, type the following:
To permanently disable this feature during system startup:
Open the /etc/selinux/config configuration file.
Change SELINUX to disabled e.g. SELINUX=disabled