Ok, let's try to track this down.
I have the intuition that it's some kind of security setting, but let's go in an orderly manner. From a previous tracking down of this issue by email with another customer, which ended up getting it to work just fine:
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Stage 1:
First thing to, you should go to Word's "About" box. There is a "Disabled items" button. Click on it, and see whether "ViEmu" appears on it (you can reenable it there). This is potential problem & solution #1.
If that is not the problem, and it probably isn't, we should check whether ViEmu is correctly registered to be loaded. Can you check the following regitry key?
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Word\AddIns\ViEmuW.Connect
This key is the link to tell Word to load the addin. It should contain the following subkeys:
Description: "ViEmu for Microsoft Word and Outlook"
FriendlyName: "ViEmu for Word and Outlook"
LoadBehavior: 0x00000003
If this is wrong somehow, please let me know. It would be weird though, I don't think this is the key.
If this is correct too, let's try to really check whether ViEmu is getting loaded into Word. For this purpose, we need an advanced process viewer. A good, free one is "Process Explorer" from SysInternals. Go to www.sysinternals.com, Process Utilities, Process Explorer, Download. Extract the contents of the ZIP file to some folder, and execute process explorer. Open Word. Now, click on the "Word" process on the top pane, and select the menu item "View | Lower Pane View | DLLS". The bottom pane will contain an alphabetically sorted list of DLLs. Go towards the end check whether ViEmuW.dll appears there. If it does, this is tricky. If it doesn't, then we know it hasn't really been loaded at all.
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Stage 2:
Can you go, in Word, to Tools->Options->Security->Macro Security, and verify two things:
"Security Level": I have it set to "Medium", which will warn you about macros and let you choose whether to load them.
"Trusted Publishers": The checkbox "Trust all installed add-ins and templates" has to be enabled.
Any change to these settings requires a Word restart to actually make them work.
If I disable the second checkbox, and restart Word, ViEmu doesn't load at all, the same as you describe. Hopefully that is the problem in your system? Try to ensure the checkbox is checked and restart Word, to see what happens.
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Stage 3:
Ok, so, next step. Let's move ViEmu from being a "system-wide add-in" to being a "per-user addin".
First of all, delete the following key with all its subkeys (it's the one we verified a while ago):
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Word\AddIns\ViEmuW.Connect
After this is done, let's add back ViEmu as a per-user add-in. To do so, save the .reg file contained in the ZIP file I am attaching and double click on it from wherever you saved it. It should ask you whether you want to add the information to the registry, to which you should answer yes. It will show a msgbox that it was added.
After this, launch Word. It's possible that it will now load (but I don't expect it to). But now it's configured differently. We can go to the Word "COM Add-Ins" interface and check whether ViEmu appears there.
Going to the COM Add-Ins dialog is not easy. This is the only way I've found to do it:
1) Right click on any tool bar in Word, and select "Customize"
2) In the dialog that pops up, make sure the "Commands" tab is selected, select the Category "Tools", and look for the "COM Add-Ins" command on the right-hand-side list
3) Drag the command to one of the active toolbars, it should add the button there (it's a text button that says "COM Add-Ins")
4) Click "Close" to exit this dialog
Now you can click on the "COM Add-Ins" button and a simple dialog will pop up. In my system, it shows an entry in the list called "ViEmu for Word and Outlook", and its checkbox is checked. What shows up on your system?
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Can you please provide feedback on the above steps, so that we can try to narrow down the options?
I apologize for the hassles - thanks for being so patient and best regards,
Jon