Problems with Helvetica font

[Daniel Patón]

Dear list:

I have a problem using the software praat. When I try to run this program I receive the following message:

% praat
Font "-*-helvetica-medium-r-normal--*-100-75-75-*-*-iso8859-1" not found. Trying Courier instead.
Praat requires the Adobe fonts Times, Helvetica, Courier and Symbol.
Praat may now crash.
X Error of failed request:  BadFont (invalid Font parameter)
  Major opcode of failed request:  56 (X_ChangeGC)
  Resource id in failed request:  0x0
  Serial number of failed request:  4449
  Current serial number in output stream:  4452

I have updated all the system but the problem persist. Any idea?

Regards

-- 
********************************************************
 Daniel Patón Domínguez
 Numerical Ecology. Ecology Unit
 Department of Plant Biology, Ecology and Earth Sciences
 Faculty of Sciences. University of Extremadura
 Avda. Elvas s/n 06071 Badajoz (Spain)
 http://unex.academia.edu/DanielPatonDominguez
 https://www.researchgate.net/profile/Daniel_Paton/
 http://sites.google.com/site/numericalecologyuex/home
********************************************************