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Delphi 2007 - Install Error 1580
Abstract: Solution for Delphi 2007 Install Script Error 1580
Symptom: Attempting to install Delphi 2007 or C++Builder 2007 results in Install Script Error 1580.
Cause: This problem occurs when the installer is run from a directory that contains a slip file for a different product than the one being installed.
Solution: Save the installer (i.e. setup.exe) to an empty directory before running it. For example: c:\temp\delphi2007.