Yesterday I was solving this contest: 2015 Syrian Private Universities Collegiate Programming Contest, then I leave it to sleep.
Today I return to solve the rest of the problems, but I faced strange problem, I asked many friends to open any problem from this contest and they can open them, but for me I have the message in the bottom-right corner :(.
Can't download contest descriptor from external storage. Are you sure you have at least one contest release?
Can any one tell me why this happen to me?