MLAT not working after reboot

Before my Internet outage, my piaware was running just fine. Once the outage happened, I shut down my piaware raspberry pi. After my Internet connection was down for a week, I booted the piaware raspberry pi running piware 3.5.1 and while the pi does connect with FlightAware, the MLAT client has failed to start.

Do I have to reinstall piaware from scratch? The logs from /var/log/piaware.log is below.

Thanks

James

Sep 1 23:02:30 piaware piaware[513]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-con
nect localhost:30005 --input-type dump1090 --results beast,connect,localhost:30104 --results beast,listen,30105 --results
ext_basestation,listen,30106 --udp-transport 70.42.6.191:5564:1529998614
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): Traceback (most recent call last):
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/tmp/buildd/piaware-3.5.1/debian/venv/lib/python3.4/site-p
ackages/cx_Freeze/initscripts/Console.py”, line 27, in
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/tmp/buildd/piaware-3.5.1/debian/venv/bin/fa-mlat-client”,
line 10, in
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 2237, in
_find_and_load
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 2226, in
_find_and_load_unlocked
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 1191, in
_load_unlocked
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 1161, in
_load_backward_compatible
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/tmp/buildd/piaware-3.5.1/debian/venv/lib/python3.4/site-p
ackages/mlat/client/coordinator.py”, line 26, in
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 2237, in
_find_and_load
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 2226, in
_find_and_load_unlocked
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 1191, in
_load_unlocked
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/usr/lib/python3.4/importlib/_bootstrap.py”, line 1161, in
_load_backward_compatible
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “ExtensionLoader__modes.py”, line 22, in
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “ExtensionLoader__modes.py”, line 21, in bootstrap
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): ImportError: No module named _modes
Sep 1 23:02:31 piaware piaware[513]: got EOF from multilateration client
Sep 1 23:02:31 piaware piaware[513]: fa-mlat-client exited with EXIT 1

Here is the last lines of /var/log/piaware.log:

How did you install piaware?
These directories look very strange.
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/tmp/buildd/piaware-3.5.1/debian/venv/bin/fa-mlat-client”,
Sep 1 23:02:31 piaware piaware[513]: mlat-client(956): File “/tmp/buildd/piaware-3.5.1/debian/venv/lib/python3.4/site-p