<p>I installed both the Delphi 2009 trial and actual release via the web installer when I received them and experienced the same errors when installing both.</p>

<p>Both times it appears that the core web installer failed when it went to spawn the additional install packages for boost, documentation and dbtools.  (It brought up a findfile dialog asking for a setup.msi that didn't exist on my machine).  When cancelling out of this, the installer reported a fatal error.</p>

<p>The uninstaller did not appear in my program list, and would did not launch from the installation folder.</p>

<p>Future attempts to bring up the installer had it in a state where it thought Delphi 2009 was already installed and it wouldn't correct or repair or uninstall it.</p>

[{'answer_id': 78283, 'author': 'Zartog', 'author_id': 9467, 'author_profile': 'https://Stackoverflow.com/users/9467', 'pm_score': 0, 'selected': False, 'text': '<p>The problems seem to originate with the web installer not having all the files needed.</p>\n\n<p>Download the 2009 ISO: <a href="http://cc.codegear.com/item/26049" rel="nofollow noreferrer">http://cc.codegear.com/item/26049</a></p>\n\n<p>Mounted it using this free tool from Microsoft: <a href="http://download.microsoft.com/download/7/b/6/7b6abd84-7841-4978-96f5-bd58df02efa2/winxpvirtualcdcontrolpanel_21.exe" rel="nofollow noreferrer">http://download.microsoft.com/download/7/b/6/7b6abd84-7841-4978-96f5-bd58df02efa2/winxpvirtualcdcontrolpanel_21.exe</a>  (You can burn it to a DVD too)</p>\n\n<p>Then reran the installer.  At this point, both the repair and uninstall worked.</p>\n'}, {'answer_id': 79912, 'author': 'Tim Knipe', 'author_id': 10493, 'author_profile': 'https://Stackoverflow.com/users/10493', 'pm_score': 3, 'selected': True, 'text': '<h2>Step 1</h2>\n\n<p>Clean out the registry of all things Delphi 2009.</p>\n\n<p>You\'re looking for <em>HKLM\\Software\\Codegear\\BDS\\6.0</em> and everything under it. Purge the HKCU equivalent while you\'re at it.</p>\n\n<p>Search under HKEY.CLASSES.ROOT for anything that contains "CodeGear\\RAD Studio\\6.0" - assuming you installed into the default folder. Purge all those items from the CLSID level.</p>\n\n<h2>Step 2</h2>\n\n<p>Clean up Windows Installer using the <a href="http://support.microsoft.com/kb/290301" rel="nofollow noreferrer" title="Microsoft Windows Installer Cleanup Utility">Microsoft Windows Installer Cleanup</a> utility. </p>\n\n<h2>Step 3</h2>\n\n<p>I suggest a reboot at this stage.</p>\n\n<h2>Step 4</h2>\n\n<p>Try to install again.</p>\n\n<p>Good Luck!</p>\n'}]
['https://Stackoverflow.com/questions/78263', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/9467/']