The window is blank
The window went empty, or it shows but buttons do nothing.
Quick question
What do you see?
An empty window
Get the window back
Read it in Yardmaster shows a blank windowWait a moment. After about 1.5 seconds of an empty window, a small card appears in the middle: "The window went blank. Click to reload."
Click Reload AMC.
The window's contents are rebuilt and you are back where you were. Your sessions keep running the whole time: only the window reloads, not the app. Text you were typing in a message box is kept.
If the app recovers by itself before you click, the card disappears on its own.
The window shows, but buttons do nothing
The window is not blank, but buttons stopped working
Read it in Yardmaster shows a blank windowReload the window yourself: open the ... menu in the toolbar and click Hard Reload. It clears the window's saved copy of the app's code and reloads it, which fixes most "nothing happens when I click" problems. Sessions keep running.
It keeps happening
It keeps happening
Read it in Yardmaster shows a blank windowQuit Yardmaster and open it again. This restarts everything, not just the window. Sessions that were working come back on their own (see Sessions come back after a crash or restart).
Try Safe Mode if it starts misbehaving again straight after opening: see Use Safe Mode.
Tell the team. Each click on Reload AMC is recorded in the app's logs, so a report helps them see what happened. See Report a problem or ask for help.