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Level 3

How to display a custom error message if launching a PDF file failed?

Hi, I am using an InstallScript custom action to launch a pdf file at the end of the installation. If the Adobe pdf reader is not installed on the machine, InstallShield will display an "Error 1720" message. Is there a way to display my own error message? Please advise. Thanks a lot!
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Flexera Alumni

How is your InstallScript code launching the PDF? What value does the function return?
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