Using a UFO generated model

Hi,

I've used Feynrules to generate a new UFO model. When I try to make a new process (for just the default process included in proc_card_mg5.dat) using the new model I get the following error message.

-bash-3.2$ ./bin/newprocess_mg5
Running...
Command "import /share/home/matthew/MadGraph5_v1_4_8_2/MyProcess/Cards/proc_card_mg5.dat" interrupted in sub-command:
"import model SM_Scalar_Resonance_UFO" with error:
TypeError : unsupported operand type(s) for +=: 'int' and 'dict'
Please report this bug on https://bugs.launchpad.net/madgraph5
More information is found in 'MG5_debug'.
Please attach this file to your report.
done
No diagrams for this process!

Any ideas?

Thanks for your help!
- Matthew