Hi Tobi,
First of all, the document template customization should be published and deploy with its supported assemblies, manifest. But anyhow if you want deploy the document template without addin, you can remove the VSTO customization programatically.
Use ServerDocument.RemoveCustomization API to remove the customization. Refer to MSDN article here:
http://msdn.microsoft.com/en-us/library/microsoft.visualstudio.tools.applications.serverdocument.removecustomization.aspx
In the scenario, if the document customization is not installed, the download addin dialog prompts only once. This is expected and reasonable reminder, this document template is part of a VSTO solution, not a standalone document.
with regards,
Forrest Guo | MSDN Community Support |
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