https://forge.codesys.com/forge/talk/Engineering/thread/5b1e908edf/2020-02-27T14:47:26.406000ZRecent posts to Error - object reference not set to an instance of a object2020-02-27T14:47:26.406000Z2020-02-27T14:47:26.406000ZShabroz.Gillhttps://forge.codesys.com/u/shabroz-gill/https://forge.codesys.com887a2c73196859016c48fef7fcbb1d5836993b15

<div class="markdown_content"><p>The log file is attached. One is before clicking ok on the exception dialog and the other is after</p> <p><a class="" href="https://forum.codesys.com//download/file.php?id=1951" rel="nofollow">codesys_log.zip <span><span>[31.54 KiB]</span></span></a></p></div>

2020-02-27T14:47:24.807000Z2020-02-27T14:47:24.807000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com5226846f2b50289db3ab0d590b9f2b5eec6dd511

<div class="markdown_content"><p><em>Originally created by:</em> M.Schaber</p> <p>Hi,</p> <p>If the issue is reproducible on your side, could you try to get a stack trace? This can be done via python, or (simpler) using the DiagnosisToolLauncher.exe in the CODESYS Common directory.#</p> <p>Thank you.</p></div>

2020-02-27T14:47:24.257000Z2020-02-27T14:47:24.257000ZShabroz.Gillhttps://forge.codesys.com/u/shabroz-gill/https://forge.codesys.comca400413473eaee3d380911738847d621be096c2

<div class="markdown_content"><p>On one of our computers, when writing values to variables through a script. We get the above mentioned exception. I see that it does write all the prepared values, but after that it throws the exception. All this happens in the function online_app.set_prepared_value</p></div>