Inno Setup compilation fails with “Required parameter ”Root“ not specified.” even when there is one

Question

I\'m a beginner about Inno Setup.
I want create an installer which copy two .exe files and append a value to the PATH environment variable.

Particularly I have t

Answer 1

When you want to break a section entry to multiple lines for readability, you have to add \ at the end of the lines to escape the new-line character(s). A good practice is also to indent the lines, to make it clear to a human reader.

[Registry]
Root: HKLM; Subkey: "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"; \
    ValueType: expandsz; ValueName: "PATH"; ValueData: "{olddata};{pf}\pandocX64"; \
    Check: NeedsAddPath('{pf}\pandocX64')

Otherwise the Inno Setup compiler treats each line as a separate, and consequently an incomplete, entry.

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I've corrected the answer to How do I modify the PATH environment variable when running an Inno Setup Installer? to include the \'s.