KUTools Tab Not Showing in Microsoft Office 2007

I have done further investigation and came across something rather strange. When I go into Word Options ... Add-Ins  and I click on the "Go" button at the bottom and I try to enable the KUTools Add-In I get a strange error (it happens for both "KUTools for Word" and "KUTools for Word checker":

 

It is turned on and has been right from the start of our conversation.

I have tried the MSI versions on a third PC running Windows 8.1. Here are the results:

1. 32bit: KUTools are shown in the add-ins but the menu items still does not appear.
2. 64bit: KUTools are shown as Inactive, but when I try to activate it, I get an error message. 

Excelfans wrote: Hello,
Please pay attention to the file extensions when uploading the files.
Please go to uninstall the Kutools for Word from the Control Panel first.
Please try the msi packages.
If you are using the 32 bit version of the Word 2007, please try to install this  32 bit msi.
Otherwise, you will need to install this  64 bit
Thanks.

1. I was trying to attach JPEG and ZIP, both are supposed to be valid.
2. I uninstalled KUTools from my second PC and tried both the 32bit and 63 bit MSI packages. Both still do not show KUTools in the menu.

I cannot even uninstall KUTools!!!