More than one solutions!!!

Had to guess a bit towards the end - nice one though!

Thanks.

This took me forever but i'm very slow.very nice image though, Thank you.

The center bit is diagonally symmetrical and everything touches, that should help with the ambiguity.

Odd - My pic looks exactly as Littlebitocd describes, all lines match the numbers - still says invalid.

Haha - switched a couple at random.... then worked.

pas mal... pas mal...