I didn't want to bug report and waste the author's time on something that might be caused by user incompetance, so I figured I'd check what other users had to say first.
1. The auto-updater does not include the bookmarks file or any other modifiable .txt file referenced in the section on customizing ProfitUI. It may of course be that the updater was never intended for a first time installation.
2. I haven't done any thorough testing, but I am unable to scroll the quest window. This means I need to resize it (and the necessary size will be very large for some quests) or open my journal to read the full description for most quests.
I will overwrite the UI manually to see if that solves the issues, and report back tomorrow.
3. (Reminder to myself) I tried previewing the house item reward from
Egg Hunt in The Nest via the journal, and nothing happened. Previewing armor works fine. I need to check if this affects all house items and if a manual installation solves the issue.