So, this is what happened to the program. I have modify the plist and png files (with the same name)
and it doesn't catch my new file. After that, I try delete the plist and png file. What surprised me is that the
program is still running fine without the plist and png file. So there must be cache somewhere.
I tried clean and build, also tried clear menu and renaming it to some file then rename it back, none of these work.
Now my program can run without the plist and png file.
How do I get rid of the cache??? Any help??
Thanks a lot
