Forum: GNU Radio OP25 error- ioctl(d_tap, TUNSETIFF, &ifr): Operation not permitted

I know none of you are working on OP25 but has anyone seen this error? 
i cant find anything on the web about this.  I already had to disable 
the Waterfall sink and the FFT sink in order to get rid of the 
"AttributeError: 'gr_hier_block2_sptr' object has no attribute 
'set_callback'" error.  Now OP25 dies this way:

Imported legacy fsk4
Using Volk machine: ssse3_32
RTL2832 Source block configuration:
  Read length (bytes): 262144
  Buffer enabled: yes
  Buffer multiplier: 8
  Buffer size (samples): 1048576
  Samples per read: 131072
  Buffer level: 50.0%
Successfully initialised demod: "ezcap EzTV"
Probing "e4k"...not found.
Probing "fc0013"...not found.
Probing "fc2580"...bad check value.
Probing "fc0012"...not found.
Probing "e4000"...not found.
Could not find tuner automatically after probe
Found RTL2832 device: ezcap EzTV (tuner: interface not implemented)
  Sample rate range:  900001 - 3200000 Hz
  Crystal frequency:  28800000 Hz
Wait delay: 196.608 ms
ioctl(d_tap, TUNSETIFF, &ifr): Operation not permitted
Using legacy decoder_ff

I'm using Unbuntu 12.10, GNUradio 3.6.3, python 2.7.3, and NooElec R820T 
RTL2832 stick.  I installed GNUradio using the build script on Balint's 
"how to build page" but OP25 I had to build from source because the 
build script there has a broken link.  Any help will be much 
appreciated.