I had to play the disc again immediately.

Then wash the agent off gently and try to play the disc again.

However, the scheme was fundamentally flawed, as a region-free player tries to play a disc using the last region that worked with the previously inserted disc.

Many buyers of such cheap players have found they have poor picture quality, dodgy sound and a reluctance to play some discs.

However, playing the disc several times would generally solve this problem.