This was not the case in a previous version of the command line Twain App as far as I remember. I wonder why I would need Qt in order to run a scan from the command line. I can use a Twain App command line and I can use a Twain App Qt as far as I could see. I still do not really understand the subject. I do not have Qt 32bit though, but my feeling is that a similar approach would work. In my case they were located under C:\Qt\5.9.9\msvc2017_64\plugins\platforms and to make it work I copied the folder platforms to the directory of the executable (of the Twain App for example). Available platform plugins are: direct2d, minimal, offscreen. Reinstalling the application may fix this problem. This application failed to start because no Qt platform plugin could be initialized. ![]() ![]() In my case I went to the installed Qt directory and looked for the files (qwindows.dll (release) and qwindowsd.dll (debug)) because a search in the internet hinted that the error message means this file cannot be found. D:\code\python\playground>python powerlawgraph.py qt.qpa.plugin: Could not load the Qt platform plugin 'windows' in '' even though it was found. ![]() I installed Qt (the version mentioned in the README, which is 64 bit). I figured a solution that worked for me on 64 bit architecture, although I feel it is not the best practice to do so.
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