I got the same problem and install updated via PIP but It still says service unable. Please advise.
pip install --upgrade localtunnel
Requirement already up-to-date: localtunnel in /Library/Python/2.7/site-packages/localtunnel-0.6.1-py2.7.egg
Downloading eventlet-0.12.1.tar.gz (267kB): 267kB downloaded
Running setup.py egg_info for package eventlet
Downloading requests-1.2.0.tar.gz (341kB): 341kB downloaded
Running setup.py egg_info for package requests
Requirement already up-to-date: argparse in /Library/Python/2.7/site-packages (from localtunnel)
Downloading greenlet-0.4.0.zip (72kB): 72kB downloaded
Running setup.py egg_info for package greenlet
Installing collected packages: eventlet, requests, greenlet
Found existing installation: eventlet 0.9.17
Uninstalling eventlet:
Successfully uninstalled eventlet
Running setup.py install for eventlet
Found existing installation: requests 0.14.1
Uninstalling requests:
Successfully uninstalled requests
Running setup.py install for requests
Found existing installation: greenlet 0.3.1
Uninstalling greenlet:
Successfully uninstalled greenlet
Running setup.py install for greenlet
building 'greenlet' extension
llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch x86_64 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c greenlet.c -o build/temp.macosx-10.7-intel-2.7/greenlet.o
llvm-gcc-4.2 -Wl,-F. -bundle -undefined dynamic_lookup -Wl,-F. -arch i386 -arch x86_64 build/temp.macosx-10.7-intel-2.7/greenlet.o -o build/lib.macosx-10.7-intel-2.7/greenlet.so
Linking /private/tmp/pip-build/greenlet/build/lib.macosx-10.7-intel-2.7/greenlet.so to /private/tmp/pip-build/greenlet/greenlet.so
Successfully installed eventlet requests greenlet
Cleaning up...