I'm really sorry, but posting links at me doesn't answer the question. I don't know what is wrong with your upgrade because I don't know what the logs are saying.
The front-end message you are getting is telling me that you have something configured or installed in your 3.13 JIRA that the 4.4.5 installer cannot handle, but without the log files, I can't guess at what it is.
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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