Airtime Installation Error

Hello

I'm running debian squeeze and have installed airtime 2.0.3(first think then write) minimal by the instalation I get the message:
There appears to be a problem with your Airtime installation.

sudo airtime-check-system
[sudo] password for _-chiwie-_:
AIRTIME_STATUS_URL             = http://airtime.chiwie.de/api/status/format/json/api_key/%%api_key%%
AIRTIME_SERVER_RESPONDING      = OK
KERNEL_VERSION                 = 2.6.32-042stab044.17
MACHINE_ARCHITECTURE           = x86_64
TOTAL_MEMORY_MBYTES            = 4194304
TOTAL_SWAP_MBYTES              = UNKNOWN
AIRTIME_VERSION                = 2.0.3
OS                             = Debian GNU/Linux 6.0.5 (squeeze) x86_64
CPU                            = Intel(R) Xeon(R) CPU           E5645  @ 2.40GHz
WEB_SERVER                     = Apache/2.2.16 (Debian)
PLAYOUT_ENGINE_PROCESS_ID      = FAILED
PLAYOUT_ENGINE_RUNNING_SECONDS = 0
PLAYOUT_ENGINE_MEM_PERC        = 0%
PLAYOUT_ENGINE_CPU_PERC        = 0%
LIQUIDSOAP_PROCESS_ID          = FAILED
LIQUIDSOAP_RUNNING_SECONDS     = 0
LIQUIDSOAP_MEM_PERC            = 0%
LIQUIDSOAP_CPU_PERC            = 0%
MEDIA_MONITOR_PROCESS_ID       = FAILED
MEDIA_MONITOR_RUNNING_SECONDS  = 0
MEDIA_MONITOR_MEM_PERC         = 0%
MEDIA_MONITOR_CPU_PERC         = 0%
RABBITMQ_PROCESS_ID            = 1339
RABBITMQ_RUNNING_SECONDS       = 284
RABBITMQ_MEM_PERC              = 0.7%
RABBITMQ_CPU_PERC              = 0.0%

I have enabled suphp so the owner of /usr/share/airtime is not root.

error logs:

 /var/log/airtime/media-monitor/media-monitor.log
2012-05-30 21:53:42,276 ERROR - [MainThread] [api_client.py : setup_media_monito
r()] : LINE 413 - Exception: No JSON object could be decoded
s: