Terminal filters extended not working

I have installed it (several times) but it still refused to either
a) work
b) show in the list of installed plugins

in case a, I click on hide tempratures and next time I start the printer the screen it is un-ticked
in case b, I can't see it under installed or available filters.

I have installed it using the url, and directly on the pi using .oprint/bin/python setup.py install.
Both show complete with no errors.

Do you mean my plugin? Are there any errors in octoprint.log at all or more importantly in the browser's developer console?

Yes that is the one.
No errors in the octoprint.log
the console has an error "Duplicate name while instantiating activeFiltersPluginViewModel"

That's a new one to me. If you ssh to your pi and type these commands do you see what could be multiple installs?

cd ~/oprint/bin
./pip freeze

pi@octopi:~ cd oprint/bin pi@octopi:~/oprint/bin ./pip freeze
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
Action-Commands==0.1
argh==0.26.2
awesome-slugify==1.6.5
Babel==2.6.0
backports-abc==0.5
Bed-Leveling-Wizard==0.2.2
Bed-Visualizer==0.1.7
blinker==1.4
certifi==2018.11.29
chainmap==1.0.2
chardet==3.0.4
click==6.2
emoji==0.4.5
feedparser==5.2.1
Flask==0.10.1
Flask-Assets==0.10
Flask-Babel==0.9
Flask-Login==0.2.11
Flask-Principal==0.3.5
frozendict==1.2
future==0.15.2
futures==3.1.1
idna==2.8
itsdangerous==1.1.0
Jinja2==2.8.1
Markdown==2.6.11
MarkupSafe==1.1.0
monotonic==1.3
netaddr==0.7.19
netifaces==0.10.9
numpy==1.16.1
OctoPrint==1.3.10
OctoPrint-ActiveFilters==0.0.1
OctoPrint-ActiveFiltersExtended==0.0.2
OctoPrint-BLTouch==0.3.1
OctoPrint-DisplayProgress==0.1.2
OctoPrint-EEprom-Marlin==1.2.1
OctoPrint-FloatingNavbar==0.3.0
OctoPrint-GcodeEditor==0.2.6
OctoPrint-GCodeSystemCommands==0.1.1
OctoPrint-NavbarTemp==0.11
OctoPrint-PrintTimeGenius==1.3
OctoPrint-TabOrder==0.5.3
OctoPrint-TerminalCommands==0.1.6
OctoPrint-Touchtest==0.1.1
pathtools==0.1.2
pkg-resources==0.0.0
pkginfo==1.4.2
Preheat==0.3.1
psutil==5.4.8
pyasn1==0.4.5
pybonjour==1.1.1
pylru==1.0.9
pyserial==3.4
python-dateutil==2.6.1
pytz==2018.9
PyYAML==3.10
regex==2019.1.24
requests==2.21.0
rsa==3.2.3
sarge==0.1.5.post0
scandir==1.3
semantic-version==2.4.2
singledispatch==3.4.0.3
six==1.12.0
speaklater==1.3
tornado==4.5.3
Unidecode==0.4.21
urllib3==1.24.1
watchdog==0.8.3
webassets==0.12.1
websocket-client==0.40.0
Werkzeug==0.8.3
wrapt==1.10.11
pi@octopi:~/oprint/bin $

Yep, it's because you have both ActiveFilters and ActiveFiltersExtended installed. Try unisntalling ActiveFilters using the following command and then restart OctoPrint.

cd ~/oprint/bin
./pip uninstall OctoPrint-ActiveFilters

Awesome @OutsourcedGuru, love it...

And then ActiveFiltersExtended felt the Quickening. The End. :credits roll:

That did it, AF wasn't working so I thought I would try your one. BTW you didn't say I had to uninstall the other one first not could I find any details on uninstalling a plug in.