Ok.
I tried with bfgminer 3.10, embedded on hashra controla image for pi, but only returns a error message - 06/21/2014 02:54:13.86 Error occured while sending StatCgminer data. Error code: BP, Message: Apikey: e099af4ebd904d3baaf9909523119af9. Bad parameter 'Stats': , and cgminermonitor dashboard always shows "no data colleted" for this worker.
Double checked API key, recompiled client, that was done without errors, but error message persists.
Maybe custom version of bfgminer ?
Thanks for detailed description. It's slightly different data format, however I'll try to fix that in two/three days. Sorry to keep you waiting!