openbabel (3.1.1) Library not loaded error on MacOS Monterey Intel

[phycgroup]

Openbabel2 version 3.1.1 installed on MacOS Monterey Intel. Port installs completely without errors, but when command obabel (main binary) is run, Library error is encountered.

Help!

[13454] obabel
dyld[69179]: Library not loaded: /opt/local/lib/libboost_iostreams-mt.dylib
  Referenced from: /opt/local/openbabel-3.1.1/bin/obabel
  Reason: tried: '/opt/local/lib/libboost_iostreams-mt.dylib' (no such file), '/usr/local/lib/libboost_iostreams-mt.dylib' (no such file), '/usr/lib/libboost_iostreams-mt.dylib' (no such file)
[1]    69179 abort      /opt/local/openbabel-3.1.1/bin/obabel

[jmroot (Joshua Root)]

I'm guessing you meant the openbabel port rather than openbabel2, as the version of the former is 3.1.1 whereas the latter is 2.4.1.

[phycgroup]

I apologize for the mistake. I guess I am confused. I installed openbabel2 (verified from shell history), and the error message points to openbabel-3.1.1 (path is to /opt/local/openbabel-3.1.1).

...

I removed openbabel2 - this port still doesn't work. However, uninstalling openbabel2 and installing openbabel works.

Thank you for your attention.

Replying to jmroot:

I'm guessing you meant the openbabel port rather than openbabel2, as the version of the former is 3.1.1 whereas the latter is 2.4.1.

[jmroot (Joshua Root)]

Replying to phycgroup:

the error message points to openbabel-3.1.1 (path is to /opt/local/openbabel-3.1.1).

That looks like it could be an installation of a binary pkg of openbabel 3 that someone built using MacPorts. If your prefix is /opt/local, neither the openbabel nor openbabel2 ports install anything under /opt/local/openbabel-3.1.1.