If you run commands that use PEAR (like pear upgrade or symfony plugin-install), you might get the following error:
Discovery of channel "pear.symfony-project.com" failed.
This is due to a bug in the version 1.4.7 of PEAR. This version doesn't recognize channel names containing dashes, and - damn - our channel is called "pear.symfony-project.com".
There are two possible workarounds, until the bug is fixed by the PEAR team:
Sorry for that, it should soon be fixed with a new PEAR release.
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I was using XAMPP on Windows and got this error due to PEAR-1.4.7
I did not have to have useless time.