All I can say is keep the bugs coming -- I appreciate the help finding them!
I will check into the large clip text bug. It's an interesting question about what the maximum clip size is going to be, but certainly there is no excuse for crashing. What I may have to do (decide to do) is make it so that after a certain size, if you still wants CHS to save huge text clips, it will do so in external files, much in the same way that i am planning to handle images. So that if you want CHS to save 10mb text clips, i could allow it, but the clips wouldn't go into the normal database -- instead they would be saved to files linked from the database entries.
As for wanting to display the last 50 items in the popup, im not sure what kind of limit i put on it.. i'm assuming you did find the option for how you tell it how many to show and can change that successfully, except that it just won't go up to as many as you want it to, is that right?