I don't think that the errors you reported had anything to do with issues with the install process, except that maybe the install process didn't set some intended defaults. This would only cause the inconvenience that you need to set some values yourself, and it would occasionally create a debug message in your logs.
I cannot know if an error had any truly problematic effects without knowing what the error messages were that you saw during installation. At this time, based only on the errors you reported, I don't think you need to re-install.
In any case, these are the steps for re-install:
1. You should be able to uninstall completely using the standard XenForo process for uninstalling add-ons.
2. If a separate add-on called VaultWiki Routes exists, remove that too.
3. After that, simply start the install process over again by re-installing the stub XML, etc.