Prime calculator stuck in radians?

Hi there, this is my first post on this forum site and hopefully I do all this correct. But my question is how do you switch between radians and degrees (as far as modes) on the HP Prime calculator? I thought it was touch the top right corner and then touch either of the symbols? I could have swore that was the way i did it before; but today when I went to switch to degrees the screen was unresponsive when that drop down menu would appear. So then from the CAS screen I went into settings and tried to change the mode there, and I could select between the two but when I would go back to the CAS screen and then back to the settings screen to see if it did indeed stay, the drop down bar would say radians again... I've tried the reset button on the back and no luck. Is there some setting that I might have turned on so it won't change between modes? I also haven't messed with the firmware at all; all I've done is take it out of the box and charge it up and use it. I've had it now since about last November and as far as I can remember this function used to work.
Ok update if anyone reads this ... I have found that within the app "function" I can not switch between radians/degrees. I am just currious as to why im not able to do so if anyone would like to comment?
Thanks, Nick
This question was solved.
View Solution.

Here's one possible reason for what you were experiencing.  Each app can have its own private radian/degree setting in the "Symbolic Setup" screen.  (Shift Symb)  When an app has the angle mode set here, it usually cannot be changed elsewhere.  To restore your ability to set the angle mode in the usual three places (Home Settings, CAS Settings, and the battery icon popup box), press Shift Symb and change the angle setting there to "System".
-Joe-

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