New answers tagged content-type-hub
Check your error log at site collection settings -> content type publishing -> Content Type Publishing Error Log. Chances are you changed a column in the hub and the consuming site is giving an error that it already has a column with that name.
This turned out to be a permission issue. I tried wrapping the code to publish the content type within SPSecurity.RunWithElevatedPrivileges and it worked. Also, do remember to use a new SPSite instance within this delegate, instead of using it from the context.
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