Recentyl I couldn’t get the Propel generator running anymore. First I suspected conflicts due to different versions that were installed at the same time but an update and forcing usage of the latest version did not help.
Turns out that Propel cannot work with the latest versions of Phing, everyghing starting from Phing 2.4.2. So unfortunately the following was necessary:
pear install -f phing/phing-2.4.2
(-f is the “force” parameter to overwrite newer versions)
Et voilà, no more errors.