Hi, What happened to the module asn1rt_ber and asn1rt_ber_v1 in R9? asn1_records.hrl still has a line: -define('RT_BER',"asn1rt_ber_v1"). The PER files are there (asn1rt_per.erl and asn1rt_per_v1.erl) but the BER ones are missing! BR, Jozsef