# Am I missing something in the documentation regarding Hier blocks?

**URL:** <https://www.ruby-forum.com/t/am-i-missing-something-in-the-documentation-regarding-hier-blocks/233926>\
**Category:** GNU Radio\
**Created:** [January 22, 2015, 8:03pm UTC](https://www.ruby-forum.com/t/am-i-missing-something-in-the-documentation-regarding-hier-blocks/233926 "2015-01-22T20:03:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [January 22, 2015, 8:03pm UTC](https://www.ruby-forum.com/t/am-i-missing-something-in-the-documentation-regarding-hier-blocks/233926/1 "2015-01-22T20:03:36Z")

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I have a bunch of hier blocks I’m trying to use. Despite have the python  
and xml related to the block in ~/.grc-gnuradio I keep getting an error  
that the hier block does not exist, and clicking on the block and  
clicking  
open hier block does nothing. What am I missing?

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**Author:** ![jon\_w](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/3e96dc/32.png) [@jon\_w](https://www.ruby-forum.com/u/jon_w)\
**Post date:** [January 22, 2015, 9:30pm UTC](https://www.ruby-forum.com/t/am-i-missing-something-in-the-documentation-regarding-hier-blocks/233926/2 "2015-01-22T21:30:26Z")

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I have “.grc\_gnuradio” … underscore, not hyphen

$ ls .grc\*/\*  
.grc\_gnuradio/string\_source.grc  
.grc\_gnuradio/string\_source.py  
.grc\_gnuradio/string\_source.py.xml

On Thu, Jan 22, 2015 at 1:02 PM, Jon W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I have a bunch of hier blocks I’m trying to use. Despite have the python and  
> xml related to the block in ~/.grc-gnuradio I keep getting an error that  
> the hier block does not exist, and clicking on the block and clicking open  
> hier block does nothing. What am I missing?
> 
> * * *
> 
> Discuss-gnuradio mailing list  
> [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
> [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)

–  
GDB has a ‘break’ feature; why doesn’t it have ‘fix’ too?