Hi

Im having trouble with the AppBuilder.
I create a file in the Browser TAB and choose the template "Callback" it creates a file that generally looks like the 
callback code.
So now I wan to link it to an ARM event and it want to choose it,it just says that theres nothing there and if I type in
 the file path to the file it says that its not a valid C file.
Even if I change the file extension to .c it still says the same thing.