Problems with submitting API settings on DW CS3

Hello,

I have installed the Paypal eCommerce toolkit extension on Dreamweaver CS3. I was prompted to enter the paypal API settings. However, after entering them and clicking "Finish", nothing happens. The "Finish" button simply does not respond. I tried to uninstall and reinstall the extension but this did not solve the issue. I do not know what to do to get this toolkit up and running. Please help!

Your configuration folder may have become corrupted. You can rename the configuration folder to have Dreamweaver recreate it. Close Dreamweaver and go to:
WinXP
-DWCS3
--C:\\Documents and Settings\\<Your User Name>\\Application Data\\Adobe\\Dreamweaver 9
Win Vista
-DWCS3
--C:\Users\\<Your User Name>\\AppData\\Roaming\\Adobe\\Dreamweaver 9

(Please note that <Your User Name> Should be replaced with the User name you use to log into your computer)
Rename the configuration folder to configuration_back. This will have the effect of disabling all of the installed extensions. You should open the extension manager and remove all extensions to clear the extension mangers cache. After removing the extensions you can then reinstall them making sure to download the latest versions from your order history.
NOTE:
On Windows Computers, The AppData or Application Data folders may be set to be hidden.
To View Hidden Folders in Windows Vista:
1) In The Windows Explorer, Click the "Organize" button
2) Select "Folders And Search Options"
3) Select the "View" tab
4) Click the "Show Hidden Folders And Files" radio button.
To View Hidden Folders in Windows XP:
1) On the Tools menu in Windows Explorer, click Folder Options.
2)Click the View tab.
3) Under Hidden files and folder


In addition, try creating a new site in DW.