I am not able to update subj software on my PC receiving instead the message. "Failed to start the app, the class name was invalid or not on the classpath, or the main method could not be found. Please contact the developers."
Is this from a fresh install, or do you have a fresh install working, but the update will not work? Let us know your computer platform and the version of AIJ you installed. It should be one of the versions from the official AIJ website:
https://www.astro.louisville.edu/software/astroimagej/installation_packages/
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