Solved - Strange UV Thick and thin line outLines when flatten in UV master

[system]

Hi Anybody can help me here?

I am doing a simple sphere and i came accross unwrapping my uv in uV master, after flatten i discover random thick lines
anybody came accross this before ?

Any solution or explaination?

Thanks in advance to all the gurus out there

Attachments

[system]

Solved: i had duplicated mesh faces along that line area .