[Discuss-gnuradio] Block key "rtl2832_source" not found in Platform

[Giulio]

Dear All,
I am new of SDR. I've read a lot and compiled Gnuradio and gr-baz on my macbook 
snow leopard 10.6.8....but nothing, gnuradio doesn't recognize my ezcap as 
source...It's a week that I try different combinations but i really don't 
understand what to change.
Can you help me?
Many Thanks 
Giulio



MacBook-di-Giulio:~ Giulio$ export 
PYTHONPATH=$PYTHONPATH:/opt/local/lib/python2.6/site-packages:/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/:/usr/local/lib/python2.7/site-packages/

MacBook-di-Giulio:~ Giulio$ 
gnuradio-companion/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/numpy/random/__init__.py:87:
 RuntimeWarning: compiletime version 2.6 of module 'mtrand' does not match 
runtime version 2.7
  from mtrand import *
<<< Welcome to GNU Radio Companion 3.3.0 >>>

Loading: "/Users/Giulio/rtl2832-fm.grc"
>>> Error: Block key "rtl2832_source" not found in Platform - grc(GNU Radio 
>>> Companion)
Traceback (most recent call last):
  File "/opt/local/bin/gnuradio-companion", line 51, in <module>
    try: gtk.window_set_default_icon(gtk.IconTheme().load_icon('gnuradio-grc', 
256, 0))
GError: Icona «gnuradio-grc» non presente nel tema
>>> Error: Connection between rtl2832_source_0(0) and 
>>> gr_freq_xlating_fir_filter_xxx_0(0) could not be made.
Traceback (most recent call last):
  File "/opt/local/lib/python2.6/site-packages/gnuradio/grc/base/FlowGraph.py", 
line 197, in import_data
    assert(source_block_id in block_ids)
AssertionError
>>> Done

Showing: "/Users/Giulio/rtl2832-fm.grc"