I have a policy.d file containing a regular expression that works in 3.0.6 that I’ve tried with two different flavors. Both flavors load and work in 3.0.6 but error in the latest 3.0.x branch. Flavor1: simple_nt_regexp = "^([^\\\\]*)(\\\\(.*))$" Flavor2: simple_nt_regexp = "^([^\\\\]*)\\\\(.*)$” In 3.0.x from today: /opt/local/etc/raddb/policy.d/strip-user-domain[9]: Invalid regular expression: /opt/local/etc/raddb/policy.d/strip-user-domain[9]: ^([^\\]*)\\(.*)$ /opt/local/etc/raddb/policy.d/strip-user-domain[9]: ^ Pattern study failed: unknown or incorrect option bit(s) set /opt/local/etc/raddb/policy.d/strip-user-domain[10]: Invalid regular expression: /opt/local/etc/raddb/policy.d/strip-user-domain[10]: ^([^\\]*)(\\(.*))$ /opt/local/etc/raddb/policy.d/strip-user-domain[10]: ^ Pattern study failed: unknown or incorrect option bit(s) set Is there something obvious that I am missing? — Aaron