解决“CS4已安装在此计算机上. 要重新安装”问题

一直用PS CS2,CS4的破解比较麻烦,后来看了龙卷风的精简版,省了破解,就装一个试试,但是一直提示我CS4已安装,让我从原版重新运行启动.清理了注册表都解决不了,后在网络上搜索了一下,找到一个可以解决的办法,从百度空间里面找到的.管用.

问题原因：
应该是安装了绿化版Adobe Photoshop/ Aftereffect / Dreamware CS4的原因， 绿化程序通过sqlite3直接将注册信息写入相关数据库，包括cache.db (%CommonProgramFiles%\Adobe\Adobe PCD\cache)、pcd.db (%CommonProgramFiles%\Adobe\Adobe PCD)、caps.db (%CommonProgramFiles%\Adobe\caps)，而这一系列操作使Premiere/After Effects绿色版与系统、Adobe注册系统过于“亲密接触”，造成使用绿色版后不能重新安装完整版Adobe Premiere/After Effects等问题；

解决办法：

Adobe CS4 Clean Script就是由Adobe官方发布的Creative Suite 4卸载工具，它会分析系统已安装的Adobe程序，并删除特定组件的相关信息，从而能顺利重新安装。如果你有这方面困扰，请下载使用Adobe CS4 Clean Script。Adobe CS4 Clean Script的使用方法简述如下（注意Vista/Windows 7系统右键选择管理员权限运行）：
1、Adobe CS4 Clean Script需要Windows Installer CleanUp Utility才能正常运行，请确保先下载安装Windows Installer 清理实用工具程序包。Windows Installer 清理实用工具下载地址：http://support.microsoft.com/kb/290301
2、下载Adobe CS4 Clean Script，解压后运行 [CS4InstallerDatabaseUtility.exe] 按提示操作即可。 下载地址： http://www.portablesoft.cn/adobe-cs4-clean-script/

Adobe官方解决此问题的页面说明

he Adobe CS4 Clean Script will help resolve installation problems experienced by users of Adobe Creative Suite 4 software. The script can clean up install records for any pre-release installations of Adobe Creative Suite 4 or Point Products. The Adobe CS4 Clean Script is designed to not interfere with a pre-existing installation of an Adobe Creative Suite 3 product. For additional information, please refer to, "Using the Adobe Creative Suite 4 Clean Script" (TechNote kb403995.)

Run the CS4 Clean Script on Windows
Important: Before running the CS4 Clean Script you should backup any files stored in our product directories. This can include custom plug-ins or profiles you have installed. The clean script is designed to remove components that may prevent the product from installing. Custom plug-ins or preference can be deleted if stored in these locations.

Uninstall the Adobe Creative Suite 4 products prior to using the CS4 Clean Script.
On Windows XP
Choose Start > Control Panel.
Double click Add or Remove Programs.
Select the Adobe Creative Suite 4 product and click Remove or Uninstall.
Follow the on screen instructions to complete the uninstall process.
On Windows Vista
Choose Start > Control Panel.
Double click Programs And Features.
Select the Adobe Creative Suite 4 product and click Remove or Uninstall.
Follow the on screen instructions to complete the uninstall process.
Download and run the Microsoft Windows Installer CleanUp Utility.
Important: The Microsoft Windows Installer CleanUp Utility is used by the Adobe CS4 Clean Script to remove the Adobe Creative Suite 4 product registry entries. If the Microsoft Windows Installer CleanUp Utility is already installed you can proceed to the next step.
Download the Microsoft Windows Installer CleanUp Utility.
Double click msicuu2.exe and follow the on screen instructions to complete the installation process.
Restart your system and close any open applications.
Download the Adobe CS4 Clean Script for Windows.
Unzip the CS4_Cleanup_Utility_Win.zip.
Double-click on the CS4_Cleanup_Utility_Win folder to open the directory.
Right click CS4InstallerDatabaseUtility.exe and select Run As Administrator.
Note: When the Run As Administrator option is not available double click on CS4InstallerDatabaseUtility.exe.
Follow the on-screen prompt to complete the script.
Choose your language by entering e for English or j for Japanese.
Note: It does not matter if you use lower or upper case letters anywhere in the script.
Review the Adobe End-User License Agreement and enter y to Accept or n to Decline. Declining will exit the Adobe CS4 Clean Script.
Choose your product to remove by typing the number to the left of the product name and press Enter.
To confirm you wish to remove the product type y or type n to proceed back to the installed products list and press Enter.
Once the script completes press Enter to exit.
Restart your system.
Important: After removing a product through the CS4 Clean Script you may still see an entry in Add Or Remove
Programs. Double click the Adobe Creative Suite 4 product and choose Yes to delete the entry.

Source：http://kb2.adobe.com/cps/406/kb406241.html