I wrote a custom class and included it in the JExpressInstaller subdirectory. The installer builds successfully, but when I run the installer, my custom class doesn't appear to run and the errors.log reports "Error while instantiating constructor for custom class".

One customer discovered that he forgot to declare his custom class public so be sure to review all the basics when writing a custom class. You might just want to start with one of the examples in the Samples subdirectory and modify it to fit your needs. Then, you can be pretty sure the basic structure is covered.
Applies to
Invalid constructor

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