Gnuradio-examples/python/digital/ issue

I seem to be having trouble with
gnuradio-examples/python/digital/ on a fedora 13 box
complaining with an eng_notation error about any value I put in (eg 10M,
10e6, 10000000) for --rx-freq or --tx-freq where the same exact script
(md5 matches) on an ubuntu box works fine. This is the latest gnuradio
git on track origin/next.

Any thoughts how I might fix this?