[erlang-questions] error_logger

[eigenfunction]

This is my sasl config file:

[{sasl, [
{sasl_error_logger, {file,"d:/error_logs/errors.log"}},
%%{errlog_type, error},
{error_logger_mf_dir,"d:/error_logs" },
{error_logger_mf_maxbytes,10485760},
{error_logger_mf_maxfiles, 2}
]}].

Can someone plz explain to me why i am only getting progress reports
in my file ?
In my code i used error_logger:msg_error ... for error messages.
thx.