You receive a "Can't display the template used in this document. Windows Installer error 1605" error message when you try to access a template in PowerPoint 2002 (327975)

RESOLUTION

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To resolve this problem, follow these steps:
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.

1. Back up all your data.
2. Download and install the Microsoft Windows Installer Clean Up utility.
   
   For additional information about how to download, install, and use the Windows Installer CleanUp utility, click the following article number to view the article in the Microsoft Knowledge Base:

   290301 Description of the Windows Installer Clean Up Utility

3. Click Start, click Run, type regedit in the Open box, and then press ENTER.
4. Locate, and then expand the following registry key:

   HKEY_CLASSES_ROOT\Installer\Products

5. Click the first GUID under this registry key.
6. In the right pane, double-click Product Name, and then write down the name of the product that is listed in the Value data box.
7. Click OK to close the Edit String dialog box.
8. Repeat steps 5 through 7 for each GUID in the list.
9. Locate, and then expand the following registry key:

   HKEY_CURRENT_USER\Software\Microsoft\Installer\Products

10. Click the first GUID in the list under this registry key.
11. In the right pane, double-click Product Name, and then write down the name of the product that is listed in the Value data box.
12. Click OK to close the Edit String dialog box.
13. Repeat steps 10 through 12 for each GUID in the list.
14. Examine the list of product names that you created in steps 6 and 11, and then verify that you have the media or Web sites available that you will need to reinstall the products.
15. Click Start, point to Settings, point to Control Panel, and then click Add/Remove Programs.
16. For each product on your list, follow these steps:
    1. Click the product name in the Currently installed programs list.
    2. Click Remove or Change/Remove.
    3. Follow the instructions on the screen to remove the product.
17. Click Start, click Run, type cmd in the Open box, and then press ENTER.
18. At the command prompt, type path c:\Program Files\Windows Installer Clean Up; %path%, and then press ENTER.
    
    Note The "%" characters are part of the command. This syntax preserves the existing directory path.
19. Type msizap.exe *! ALLPRODUCTS, and then press ENTER. This step removes all the Microsoft Windows Installer keys.
20. Restart your computer, and then reinstall all the programs that you removed in step 16.