I think the placement of the tip at the command summary is not that good. Would prefer you to put it at the feature itself. Or like what I have suggested previously, rename the error message and put it on the status bar. Because this is very easily missed out on but people who use your app. Most people will not look at the command summary first but instead, go straight to the features.

I think the placement of the tip at the command summary is not that good. Would prefer you to put it at the feature itself. Or like what I have suggested previously, rename the error message and put it on the status bar. Because this is very easily missed out on but people who use your app. Most people will not look at the command summary first but instead, go straight to the features.