mockservicerunner -b on linux ?

Hi All,

I'm trying to use mockservicerunner on a linux box, so that I can start it and leave it running unattended.

I figure the command should look like this:
  nohup mockservicerunner.sh  -b soapui-project.xml &

I want to run all of the services in the project.

However the -b seems to simply cause the app to exit.

If i use this:
  mockservicerunner.sh  soapui-project.xml
I get standard behaviour with a "Press any key to terminate..."
If I use this:
  mockservicerunner.sh  -b soapui-project.xml
I get he same messages, but it simply exits and there are no web-services on the configured port.

I can't seem to make it continue to run. 
I've seen lots of posts referring to using -b with mockservicerunner.bat on a windows box, so I'd expect it to work.

I'm using java 1.6.0 and SoapUI 3.0.1

Any ideas?

Thanks,

Greg