https://forge.codesys.com/u/anthony-p/activity/Recent activity for anthony-penTue, 16 Jun 2026 15:24:50 -0000https://forge.codesys.com/forge/talk/Engineering/thread/5e248a0c1b/?limit=25#4924Hello, I'm trying to install Codesys SP21p6 (but the error occurs in SP22 too for eg.) but it fails to install ApplicationComposer. Trying to install myself (version 4.4.0.0 or 4.5.0.0) by clicking 'changing the installation' from the Codesys Installer isn't better. The only message I get is "An error occured during the installation: The file [..]/ApplicationComposer.plugin.dll isn't a valid plugin" How is that? The installation went good the last time before a reinstallation... However, installing...anthony-pTue, 16 Jun 2026 15:24:50 -0000https://forge.codesys.com/forge/talk/Engineering/thread/5e248a0c1b/?limit=25#4924