Reason: Incompatible library version: gridflow.pd_darwin requires version 36.0.0 or later, but libpng12.0.dylib provides version 30.0.0 error: [import]: ERROR: can't load library in 'gridflow'
What version of Pd-extended are you using ? I made the package referring to what libs were distributed with the most recent release (0.41.4)...
~/ pb@banshee$ otool -L /Applications/Pd-extended.app/Contents/lib/libpng12.0.dylib /Applications/Pd-extended.app/Contents/lib/libpng12.0.dylib: @executable_path/../../lib/libpng12.0.dylib (compatibility version 36.0.0, current version 36.0.0) /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.3) /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.3.11)