dyld: Symbol not found: __cg_jpeg_resync_to_restart

Ao usar o MAMP PRO e o YUI Compressor surgiu-me este erro:

==> /Applications/MAMP/logs/apache_error.log <==
dyld: Symbol not found: __cg_jpeg_resync_to_restart
  Referenced from: /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
  Expected in: /Applications/MAMP/Library/lib/libJPEG.dylib
 in /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO

==> /Applications/MAMP/logs/php_error.log <==
[25-Aug-2014 12:06:04 Europe/Lisbon] YUI Compressor returned error

O problema é que o MAMP PRO faz export da variável DYLD_LIBRARY_PATH. Solução: editar o ficheiro: "/Applications/MAMP/Library/bin/envvars" e comentar o seu conteúdo. Ficheiro original:

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# envvars-std - default environment variables for apachectl
#
# This file is generated from envvars-std.in
#
if test "x$DYLD_LIBRARY_PATH" != "x" ; then
  DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib:$DYLD_LIBRARY_PATH"
else
  DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib"
fi
export DYLD_LIBRARY_PATH
#

Ficheiro editado:

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# envvars-std - default environment variables for apachectl
#
# This file is generated from envvars-std.in
#
#if test "x$DYLD_LIBRARY_PATH" != "x" ; then
#  DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib:$DYLD_LIBRARY_PATH"
#else
#  DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib"
#fi
#export DYLD_LIBRARY_PATH
#