Hi,
We recently bought a new PC with some powerful specs.
GNU Radio was built from the source and it seems to be
installed fine. However, when I try to use the virtual
sink and source blocks in my flow graph, I am getting
the following error:
Traceback (most recent call last):
File "./test_skh.py", line 595, in <module>
tb = test_skh()
File "./test_skh.py", line 486, in __init__
self.connect((self.virtual_source_0, 0),
(self.blocks_multiply_conjugate_cc_0, 0))
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py",
line 93, in __getattr__
return getattr(self._impl, name)
AttributeError: 'top_block_sptr' object has no
attribute 'virtual_source_0'
Once I replace the virtual blocks with direct
connections, things work just fine. What is the cause
for this problem and how to fix it?
Please note that on an older machine, GNU Radio was
installed around a month ago following the same procedure
followed here, and the virtual sink/source blocks work
just fine.