Python causing Orthanc to Stop

General
1

  1. Installed Python311 to all Users

  2. Add to both variables enviroment the Path C:\Program Files\Python311; (also tried without “;”)

  3. Tried to add Both .dll availiable for x64 and 32x on Repository, but I think mainline is the correct (One file per test, obviously)

  4. Added to orthan.json
    “Plugins” : [ “C:\Program Files\Orthanc Server\Plugins” ],
    “PythonScript” : “C:\Program Files\Orthanc Server\Python Scripts\rest.py”,
    “PythonVerbose” : false,

  5. Log says
    MAIN PluginsManager.cpp:157] Sample worklist plugin is finalizing
    E0307 15:44:13.817279 MAIN main.cpp:2106] Uncaught exception, stopping now: [Error while using a shared library (plugin)] (code 25)
    W0307 15:44:13.817279 MAIN main.cpp:2137] Orthanc has stopped

Rest.py contains:
import orthanc
import pprint

def OnRest(output, uri, **request):
pprint.pprint(request)
print(‘Accessing uri: %s’ % uri)
output.AnswerBuffer(‘ok\n’, ‘text/plain’)

orthanc.RegisterRestCallback(‘/(to)(t)o’, OnRest)
orthanc.RegisterRestCallback(‘/tata’, OnRest)

Im not giving a single step forward once again, the whole morning trying to figure out whats wrong. Im new at this stuff, but I don’t seem to be forgetting anything.

2

If you are using Orthanc for Windows, try using \\ instead of \ in your path like this

“PythonScript” : “C:\\Program Files\\Orthanc Server\\Python Scripts\\rest.py”

3

What version of python did you install?
Python seems to be added to path.
Did you install python as administrator or user?

When Orthanc crashes while loading a script, two logs are generated; examine the Python error logs for insights. The problem may arise from Orthanc’s search for packages in the system site-packages folder. One resolution is to run Orthanc at the user level, though challenges may be encountered. To address the issue, a workaround involves importing global packages first, then specifying the user-level site-packages folder location and importing the remaining packages. The provided code snippet demonstrates this approach:

import sys
import orthanc
sys.path.append(r’C:\Users\user\AppData\Roaming\Python\Python311\site-packages’)
from PIL import Image
import imagehash
import numpy as np

4

I think it’s a behaviour of Ctrl+C/V here in the Community, my code is currently with \, but it’s the second time I’ve pasted her and it turned into one!

This part is fine

5

Edit: OK, doc leads us to a 32-bit link

changed it to

Now it’s working!

Ok, got a new clue, it’s the DLL that’s actually crashing.

0308 14:19:41.257927 MAIN PluginsManager.cpp:303] (plugins) Found a shared library: “C:\Program Files\Orthanc Server\Plugins\OrthancPython-Python3.11-mainline.dll”
E0308 14:19:41.289731 MAIN SharedLibrary.cpp:50] LoadLibrary(C:\Program Files\Orthanc Server\Plugins\OrthancPython-Python3.11-mainline.dll) failed: Error 193
E0308 14:19:41.289731 MAIN OrthancException.cpp:61] Error while using a shared library (plugin): You are most probably trying to load a 32bit plugin into a 64bit version of Orthanc

Python 3.11.0
Plugin OrthancPython-Python3.11-mainline

Everythings is x64

6

Edit: OK, Orthanc leads us to a 32-bit link

changed it to

Now it’s working!

Ok, got a new clue, it’s the DLL that’s actually crashing.

0308 14:19:41.257927 MAIN PluginsManager.cpp:303] (plugins) Found a shared library: “C:\Program Files\Orthanc Server\Plugins\OrthancPython-Python3.11-mainline.dll”
E0308 14:19:41.289731 MAIN SharedLibrary.cpp:50] LoadLibrary(C:\Program Files\Orthanc Server\Plugins\OrthancPython-Python3.11-mainline.dll) failed: Error 193
E0308 14:19:41.289731 MAIN OrthancException.cpp:61] Error while using a shared library (plugin): You are most probably trying to load a 32bit plugin into a 64bit version of Orthanc

Python 3.11.0
Plugin OrthancPython-Python3.11-mainline

Everythings is x64.

How is it probably 32? haha

7

Maybe your Python install is 32 bits ?

Try running it with Process Monitor as explained here to find the root cause of the problem.