We just released a solution to the problem a few moments ago. Please let us know if you still have issues installing the Wikitude Cordova plugin, thx!
I forgot to mention that this problem has nothing to do with the fact that you are using Ionic (in my opinion).
This problem happens with the last version of the SDK if you try to install it with the "cordova plugin add" command (or if you try to install the plugin sample project as described in the documentation).
The reason for this problem is described here on GitHub.
For this problem, the solution was for me to :
Hope that Wikitude can fix that soon, or change its documentation to better guide new user.
Have a good week-end,
Wont complete the build, and I think it has to do with the architecture format. Does anyone no a solution?