Posted By: Angelo Stabile (angelostabile@yahoo.com.br) On: 22 Mar 2008 03:31 PM

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Problem related to EndNote X1 with Windows Vista Home Premium and Office 2007 - Invalid class String

Problem: “Cite While you Write toolbar” doesn’t work properly (when buttons such as “Go to EndNote”, “Insert Selected Citation”, “Update Citations and Bibliography” are pressed, error message “Invalid class String” appears).
Causes: second EndNote site (http://www.endnote.com/support/faqs/CWYW/faq13.asp), if you have never run the EndNote program under the account you're current logged in as, you may get an "Invalid Class String" error when you try to use the tools in Word.
Solution (second EndNote site):
1. Close out of Word.
2. Open the EndNote program and a library.
3. Open Word and try to use the tools.
4. They should function as expected.
You only need to open the programs in this order the first time in order to establish the link between Word and EndNote properly.
You may also get this error if the program was installed under a different account than the one you are currently logged in under. On a Windows 2000/XP/Vista system you must install the program while logged in as the user who will be running the program, and this account must have administrative rights to the local machine in order for the registry to be updated correctly. Rerun the installation under these conditions and the error should be resolved.
This error may also be caused if you are using a different version of EndNote than the version of the CWYW tools that are installed in Word. Make sure that the version of EndNote that's currently open matches the version of the tools in Word when you go to "Tools > EndNote"(in Word 2000/XP/2003) or look at the "Add-Ins" tab in Word 2007. The name of that "EndNote" submenu should be the same number as your current version of EndNote (for example, EndNote X1 will have an "EndNote X1" submenu in word 2000/XP/2003). Only EndNote X1 will have an "EndNote" tab in Word 2007.
Solution (in my case): Neither of the solutions proposed before had solved my problem. After trying so much, including reinstalling EndNote and Office, I discovered that the cause was Windows Vista UAC (User Account Control). Disabling this Windows feature, removing all EndNote templates in Word, reinstalling “Cite While you Write toolbar” (see how to do after, in this article) and following what says EndNote (start EndNote before Word in the first time you’ll use it), you`ll be able to use both programs properly. Since Windows Vista UAC is a important security tool, and it is not recommended to disable it, how could I solve this problem?
Below I will describe the steps I used to make EndNote work properly without disabling Windows Vista UAC:
1. Open Microsoft Word;
2. go to Office button and select “Word Options”, and then “Templates”;
3. in manage, go to “Com Templates” and remove “Cite While You Write”;
4. in manage, go to “Word Templates” and remove “EndNote Cwyw.dotm” and “EndNote Web Cwyw.dotm”;
5. Close Microsoft Word;
6. Go to C:\Program Files\EndNote X1 and right click the file “EndNote X1.exe”;
7. Select “Properties” and “Compatibility” and mark “Run this program as an administrator”;
8. Click “Show settings for all users” and mark “Run this program in compatibility mode for”;
9. Go to the start menu and in the search box, type: CMD;
10. Hold down SHIFT and CTRL and hit the Enter Key;
11. At the prompt, type: CD "C:\Program Files\Common Files\Thomson ResearchSoft\Cwyw";
12. From this folder, run the command: regsvr32 "EndNote Cwyw.dll";
13. Open EndNote program;
14. Open Word program.
Now you’ll be able to use all features of EndNote in Microsoft Word 2007.

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