DSP Robotics Support

I have been pulling my hair out and trying every possible combo- but although I've got Flowstone receiving strings from both an Uno and a Mega (2 different Com Port drivers) as per the various examples on the Forums, I have yet to send anything. The COM log says "4 bytes sent" but the Arduino isn't picking anything up- weird. Please tell me someone has solved this. Has anyone anywhere ever sent data from Flowstone to an Arduino?
Thanks
Quentin

Is it possible to use ruby to do it. I saw ruby Gems are not supported and it seems most examples of Ruby code to talk to an Arduino use Gems.. hmm
Thanks again
Quentin