Search method? Are you talking about the Search tab? That searches for items and folders within the libraries you've already added. It isn't used to add new libraries. Like if you're looking for something that has "bowtie" in the name, you search for bowtie.

To add a new library/runtime, click the indicated button.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)