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Dear Jean-Francois,
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<div class="">OK, thank you for the information.</div>
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<div>Which exact Linux Mint are you on? As I remember Mint is a Debian-variant - and was our Debian packages your method of installation? In this situation, the dependencies are assumed to be resolved using Python modules provided by the OS itself, not conda
or pip.</div>
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<div>The problem seems to relate to problems in the scintilla-based editor, which version of libqscintilla is installed?</div>
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<div>What I get on a Ubuntu 20.04 LTS (from the OS, not pip) is</div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">ii libqscintilla2-qt5-15 2.11.2+dfsg-6 amd64 Qt5 port of the Scintilla source code editing widget</span></div>
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<div>Is your Mint python “in mint condition” ( ;-) ) or has it been enriched with pip-stuff installed at the system level? In the latter case it may be worth checking how the code behaves in a “pure” environment.</div>
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<div>Now to a more practical attempt at a solution:</div>
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<div>I would try upgrading to 2.7.1 and/or 3.1 which have a new configuration-option in mccode_config.json that allows to avoid using scintilla all together:</div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">mcstas-3.1 env ~ $ mcrun --write-user-config</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">loading system configuration</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">userconfig saved to /Users/pkwi/.mcstas/3.1/mccode_config.json</span></div>
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<div>and then edit mccode_config.json so that</div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> "QSCI": “0"</span></div>
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<div>This should avoid any reference to the qscintilla lib and widgets.</div>
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<div>Best and let me know how it goes,</div>
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<div>Peter</div>
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<div class="">On 23 Mar 2022, at 13.16, Jean-Francois Moulin <<a href="mailto:jean-francois.moulin@hereon.de" class="">jean-francois.moulin@hereon.de</a>> wrote:</div>
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Hello,<br class="">
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I just tried a fresh install of mcstas on a linux mint box and could not start mcgui. The backtrace seems to point to a conflict with the installed pyqt5:<br class="">
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Original exception was:<br class="">
Traceback (most recent call last):<br class="">
File "/usr/share/mcstas/2.7.1/bin/../tools/Python/mcgui/mcgui.py", line 945, in <module><br class="">
main()<br class="">
File "/usr/share/mcstas/2.7.1/bin/../tools/Python/mcgui/mcgui.py", line 935, in main<br class="">
mcguiApp.ctr = McGuiAppController()<br class="">
File "/usr/share/mcstas/2.7.1/bin/../tools/Python/mcgui/mcgui.py", line 417, in __init__<br class="">
self.view = McView()<br class="">
File "/usr/share/mcstas/2.7.1/tools/Python/mcgui/viewclasses.py", line 23, in __init__<br class="">
self.ew = McCodeEditorWindow()<br class="">
File "/usr/share/mcstas/2.7.1/tools/Python/mcgui/viewclasses.py", line 281, in __init__<br class="">
self.__initScintilla()<br class="">
File "/usr/share/mcstas/2.7.1/tools/Python/mcgui/viewclasses.py", line 471, in __initScintilla<br class="">
from PyQt5 import Qsci<br class="">
ValueError: PyCapsule_GetPointer called with incorrect name<br class="">
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I tried both 2.7 and 3 versions, both show the same behaviour.<br class="">
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For Info, pip3 list returns the following<br class="">
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PyQt5 5.15.6<br class="">
PyQt5-Qt5 5.15.2<br class="">
PyQt5-sip 12.9.1<br class="">
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Any help appreciated!<br class="">
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Jean-François<br class="">
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