Some Mouse Clicks not working in Mac OS X 10.5.2
Many users are reporting issues of mouse clicks not working properly after updating to Mac OS X 10.5.2. This issue occurs when a floating window (such as the tips window, or the visual template editor’s properties window) is open at the same time as a sheet window (such as the enter time sheet, or edit debt/credit window). Any mouse clicks made in the sheet window will not be recognized and it may seem as if Studiometry is frozen.
To get around this simply close any floating windows that are open at the time. You can also use the escape key to close the current sheet window if the application seems frozen.
We have a workaround for this issue available for Studiometry the 5.1 release. Studiometry 5.1 will be available very soon.
Official Knowledge Base Article: Here