stats_archiver-default and menelaus_web_alerts_srv crash reports during regression runs

I am seeing few crash reports in the latest regression runs

1)
Crashing process
initial_call

{menelaus_web_alerts_srv,init,['Argument__1']}

pid <0.155.0>
registered_name menelaus_web_alerts_srv
error_info
{exit,{{badmatch,false},
[

{ns_storage_conf,read_path_from_conf,4}

,

{menelaus_web_alerts_srv,check,4}

,

{lists,foldl,3}

,

{menelaus_web_alerts_srv,handle_info,2}

,

{gen_server,handle_msg,5},
{proc_lib,init_p_do_apply,3}]},
[{gen_server,terminate,6},{proc_lib,init_p_do_apply,3}]}
ancestors [menelaus_sup,ns_server_sup,ns_server_cluster_sup,<0.51.0>]
messages []
links [<0.48.0>,<0.150.0>]
dictionary []
trap_exit false
status running
heap_size 46368
stack_size 24
reductions 199886


2)
CRASH REPORT <0.451.0> 2011-05-19 12:20:21
===============================================================================
Crashing process
initial_call {stats_archiver,init,['Argument__1']}
pid <0.451.0>
registered_name 'stats_archiver-default'
error_info
{exit,
badmatch,{aborted,{no_exists,'stats_archiver-default-minute'},
[{stats_archiver,cascade,4},
{stats_archiver,do_handle_info,2},
{stats_archiver,handle_info,2},
{gen_server,handle_msg,5}

,

{proc_lib,init_p_do_apply,3}]},
[{gen_server,terminate,6},{proc_lib,init_p_do_apply,3}

]}
ancestors ['single_bucket_sup-default',<0.442.0>]