[EDIT] The last version of MAMP with the last version of OSX Yosemite works fine.
I installed the beta of Yosemite two month ago, no problem with MAMP. With the last
On MAMP, I was able to get MySQL to work by editing /Applications/MAMP/bin/startMysql.sh and unsetting DYLD_LIBRARY_PATH. So the updated script looks like this:
# /bin/sh
unset DYLD_LIBRARY_PATH
/Applications/MAMP/Library/bin/mysqld_safe... etc.
It also required killing all MySQL processes previously started by MAMP.