Strange crash at starting up

[Barco]

Dear Buddies,

Sometime zotonic can start-up corrrectly and sometime always crash with following errors, but seemingly I did nothing. I don't know why?

{"init terminating in do_boot",{{badmatch,{error,{shutdown,{zotonic_app,start,[normal,[]]}}}},[{zotonic,start,1,[{file,"src/zotonic.erl"},{line,34}]},{init,start_it,1,[]},{init,start_em,1,[]}]}}

Crash dump was written to: erl_crash.dump
init terminating in do_boot ()

[Barco]

Sorry, maybe I know why!

I changed the pg connection from direct postgresql to via pgpool-II, so it means that Zotonic doesn't support pgpool-II?

Please illuminate. Thanks!

Barco