Toon Boom Play play only 218 frames

Toon Boom Play play only 218 frames from scene with about 300 frames. Render procedure and bargraf is showing about 300 frames from scene but when I want play it, it plays it normally till frame 218, than continue with black view. Can someone help me (maybe settings change)?

to add to what Lilly said, are the last frames black drawings on no background? (as when rendered the default background is black).

Are all of your drawings exposed until the end? Can you show us a screenshot of your timeline please? Just upload the screenshot to a free site like Photobucket and then post the link here.