Hi Stefan,

I really appreciate your valuable advice.
I’ve downgraded Python to 3.3 right way.

However, the problem haven’t been solved yet at this time.
As you pointed out, I also suspect the PATH of C binding library “libcbind.dylib” cannot be identified.

Actually, the 64bit version of Python is installed in my machine, but the installed Cache version is also 64bit.
I think this should work....

I've double-checked “~/.bash_profile”, where I set PATHs, but I don't know what is wrong.
Would it be possible to provide me with additional advice  if there are any points to be reviewed in the “~/.bash_profile” below?

------------------------~/.bash_profile---------------------------
export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
eval "$(pyenv init -)"
export PATH=/$USER$/InterSystems/Cache/bin:$PATH
export DYLD_LIBRARY_PATH=/$USER$/InterSystems/Cache/bin:$DYLD_LIBRARY_PATH
------------------------------------------------------------------------------

It would be really appreciated if you could provide me with additional advice.

Thank you for your support.