Adding a content package to an existing project has an interesting error message when the version is a different minor version.
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I am assuming the package is trying to warn that it might not be compatible, but the minor version number is left off the error message, resulting in something less than helpful.
It still allowed me to add the content package however.
Can you let me know what package you are trying to add to the 4.7 project? You are probably trying to add a package that works with older versions of the engine but has not been updated to work in 4.7.
Thank you for the report. I attempted to reproduce this but so far I haven’t been able to get the same error message that you are seeing. Without a repro it will be hard for us to pin down the cause of this but I will make our Launcher team aware of the issue.