Hi
I have removed Lazarus completely, re-insatlled latest trunk, download latest 9.6.1 installed, re-downloaded bgracontrol 4.5 and am getting the same error.
I think the lates trunk from the last few days is causing issues, with lazarus, as when you install a component the ide rebuilds, but when lazarus auto-starts it does not open as normal, you have to click the icon in the task bar to see it. Even tools build lazarus exhibits the same behaviour