For some users, even though FruitJuice is set to start at login (and does, indeed, start at login), it may indicate otherwise. There is a work-around for this message.
All you need to do is place an empty text file named “1324.txt” in the following directory:
(Your Home Directory) > Library > Containers > com.batteryProject.FruitJuiceMAS > Data > Library > Application Support > com.batteryProject.FruitJuice
The next time FruitJuice starts up, no matter what, it will skip the start at login message.
Note: To navigate to your “Library” folder, in the Finder, you can open the “Go” menu while holding the Option key and there will be a “Library” option.