Symantec WINDOWS INSTALLER EDITOR 8.0 Reference page 362

Windows Installer Editor Reference
To fix source paths
If a file in the installation has a missing or broken source path, but the file should remain
in the installation, you must fix its source path before you can compile successfully. Do
either of the following:
Select Installation Expert > Files page.
a. In the lower-left list box, navigate to the directory that contains the file.
b. In the lower-right list box, double-click the file to display the File Details dialog
box.
c. On the General tab, enter the correct path in Source Pathname.
Use the Convert Source Paths tool.
See Source Paths in an Installation on page 318.
Tools
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