The stub received bad data

"System.Runtime.InteropServices.COMException (0x800706F7): The stub received bad data. (Exception from HRESULT: 0x800706F7)
at Word.Find.Execute("

To work around this issue, follow these steps:

1. Click Start, click Run, type Regedit in the Open box, and then click OK.
2. Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
3. Right-click the registry key that you located in step 2, click New, and then click Key.
4. Type OleAut, and then press ENTER.
5. Right-click OleAut, click New, and then click DWORD
6. Type DisableShield, and then press ENTER.
7. Right-click DisableShield, and then click Modify.
8. In the Value data box, type 00000001, and then click OK.
9. On the File menu, click Exit to quit Registry Editor.

Note: This workaround disables some security checks that have been implemented in the Windows Server 2003 and Windows XP operating systems. Therefore, we recommend that you use this workaround to test whether the hotfix that this article describes will resolve the problem that you are experiencing. We do not recommend that you use this workaround as a permanent resolution for this problem.

More info:
http://support.microsoft.com/kb/895321/