Is the error happening on or a customer's machine ? What is the exact error message or code (e.g., 0x80040702)?
Avoid bloating the script with massive hard-coded arrays; use external data files instead. Installshield Setup Inx
If you have the source, perform a "Clean" and then "Build" to generate a fresh .inx . Is the error happening on or a customer's machine
If you are a developer inheriting a legacy project and you only have the Setup.inx file without the original source code, you are in a "black box" situation. Can you decompile it? Installshield Setup Inx
It contains every "if-then" statement and function call.
