# Errors when lunching Gnuradio-Companion

**URL:** <https://www.ruby-forum.com/t/errors-when-lunching-gnuradio-companion/244983>\
**Category:** GNU Radio\
**Created:** [July 23, 2016, 5:55pm UTC](https://www.ruby-forum.com/t/errors-when-lunching-gnuradio-companion/244983 "2016-07-23T17:55:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\
**Post date:** [July 23, 2016, 5:55pm UTC](https://www.ruby-forum.com/t/errors-when-lunching-gnuradio-companion/244983/1 "2016-07-23T17:55:43Z")

</div>

Hi folks,  
I am new user and trying to run gnuradio under Ubuntu.  
I am not an Ubuntu and gnuradio user but I am trying to  
Run a program that uses gnuradio.  
When I run gnuradio-companion, I get the following errors  
Either in gnuradio and in the Ubuntu terminal:

Preferences file: /home/vincenzo/.gnuradio/grc.conf  
Block paths:  
/home/vincenzo/.grc\_gnuradio  
/usr/local/share/gnuradio/grc/blocks  
/usr/share/gnuradio/grc/blocks

Loading:  
“/home/vincenzo/HAM/gr-ax100-master/examples/ax100\_rx\_fm\_demod.grc”

> > > Error: Block key “ax100\_adsb\_kml” not found  
> > > Error: Block key “ax100\_beacon\_parser” not found  
> > > Error: Block key “ax100\_gomx3\_rs\_decode” not found  
> > > Error: Block key “csp\_check\_crc” not found  
> > > Error: Block key “csp\_print\_header” not found  
> > > Error: Block key “synctags\_fixedlen\_tagger” not found  
> > > Done

Showing:  
"/home/vincenzo/HAM/gr-ax100-master/examples/ax100\_rx\_fm\_demod.grc

I have also tried to reinstall it but get the same problem.  
Any help?  
Enzo