I've seen this before. My solution was (applies to Windows XP, don't know about others):
ACT! 6.0 has to be installed after Word (/Office), so assuming it was installed before the upgrade to Office 2003, you will need to uninstall & re-install it. Before you begin, read all of the following...
The Windows user-account you are in must have Administrator priviledges when you do the re-install. If there will be other Windows user-accounts on the computer that will be used to run ACT, they will have to have Administrator priviledges as well.
After you've set the user-account(s) priviledges, uninstall and re-install ACT (and the Hotfix for Word 2003, I think, so just do it).
Make sure the word processor is set for Word 2003 in the Preferences.
Open ACT and try a letter. If it works (it should), continue with this solution.
I recommend that you re-start the computer, open ACT, and open a letter again. This doesn't always make a difference, but let's play it safe.
If there will be other Windows user-accounts on the computer that will be used to run ACT, log in to Windows in each user-account, and repeat the steps in the previous three lines for each user-account.
Once you've completed these steps, you can change the Windows user-accounts from Administrator back to whatever they were before.
Obviously, I can't guarantee that this will solve the problem, but it worked for me numerous times.
I am getting a similar error message, although I downloaded Act 6 again. Do you suggest that I delelet Act 6 completely and then re-down load it? If so, I assume that all my databases and templates will be saved and not deleted.
Hi there, I tried your solution with a similar - but not identical - problem. The message I'm getting is: ACT could not open your word processor. This may be a result of inadequate permissions in Windows. MS Word or 2002 (XP). The word processor driver is not running. I have a single-user license and use ACT from a home office. I just bought a new Vista machine and installed Office 2002 from my MS Office XP Small Business CD. Could the problem be due to Vista? I have MS Office Professional Edition 2003 Upgrade but never installed it. Would uninstalling 2002 and replacing it with 2003 make a difference? Any suggestions would be appreciated.
That KB has a link to another KB with the actual error as described in this thread:
Title : Error Message: "Failed to Connect to Word Processor: ACT! Word Processor" or "Failed to Connect to Word Processor: Word 95 - 2002," Followed by "The Word Processor Driver Is Not Running" When Writing or Editing a Document