3ds max uv maps open corrupted

[mk360kl]

When I open the UV map of this model, it appears corrupted. What could be the reason? What should I do?

 

[dmitriy.shpilevoy]

Doesn't look corrupted. Might be distorted by peeling and poorly packed, but apart from that it's fine.

[jibijib]

Try selecting each element and pressing the quick peel button or use the relax tool:

If this doesn't work, just select the problem areas which aren't complying (because they look tightly compressed and concave), detaching them and then reusing the above method.