# GNu radio examples not running **URL:** \ **Category:** GNU Radio\ **Created:** [June 5, 2014, 6:30am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217 "2014-06-05T06:30:12Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 6:30am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/1 "2014-06-05T06:30:12Z")
Hi All, When i try to run any of built in examples (in .py form) with GRC,i get the following error: Error: /usr/local/share/gnuradio/examples/audio/audio\_fft.py:1:1:FATAL:PARSER:ERR\_DOCUMENT\_EMPTY: Start tag expected, ‘\<’ not found An example of such file is as attached. ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 9:54am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/2 "2014-06-05T09:54:08Z")
On 05.06.2014 06:28, jason sam wrote: > Hi All, > When i try to run any of built in examples (in .py form) with GRC,i get > the following error: Are you trying to open the .py file with GRC? If yes, you can’t do that. You must either run the .py directly, or run the .grc file. M ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 9:57am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/3 "2014-06-05T09:57:05Z")
If i run it in terminal even then its not running. On Thu, Jun 5, 2014 at 12:52 PM, Martin B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 10:15am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/4 "2014-06-05T10:15:58Z")
Hi Ali, well, then what’s the problem when running the Python file in a terminal? Usually, this will be something like your audio device being inaccessible and is really more of a configuration problem on your side 🙂 Greetings, Marcus ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 10:00am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/5 "2014-06-05T10:00:38Z")
‘.grc’ file is not available,only ‘.py’ is available. ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 10:30am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/6 "2014-06-05T10:30:43Z")
The problem is that when i run it in terminal the terminal opens momentarily and then closes again. On Thu, Jun 5, 2014 at 1:14 PM, Marcus Müller [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 5, 2014, 11:07am UTC](https://www.ruby-forum.com/t/gnu-radio-examples-not-running/230217/7 "2014-06-05T11:07:17Z")
Ali, you need to be a little more proactive when trying to solve your problems. As you have showed in other posts, you’re able to run programs from a command line (e.g. cmake), and that’s what you should do here. Greetings, Marcus