Running latexindent I get the following error message:
YAML::Tiny found a duplicate key 'pmatrix' in line '1' at /usr/local/texlive/2014/bin/x86_64-linux/latexindent line 171.
The bug resists:
- Reinstallation (working on Ubuntu 14.10)
- Removal of all configuration files
- Logging in from another user account.
Any ideas for a workaround?
Edit: the problem persists even after upgrade to latexindent version 2.0R, with the date of the latexindent.pl being Dec 7th, 2014:

latexindent.pl version 1.11R; strangely enough, I never had this problem before. – Yossi Gil Jan 05 '15 at 12:33defaultSettings.yamldid indeed contain a duplicated entry,pmatrix. In older versions ofYAML::Tinythis wasn't an issue, but presumably you have a newer version. Let me know if this fixes the issue or not once you seeversion 2.0Rinindent.log– cmhughes Jan 05 '15 at 13:06~/.latexinde.yamlhad a copy of the olddefaultSettings.yaml. Fixing this solved the problem. Thanks! – Yossi Gil Jan 06 '15 at 18:52