Hi Godze,


The Error 1) refers to wrong topology see http://en.wikipedia.org/wiki/Euler_number_(topology)#Examples for more reference in what the Euler number means. It seems if is =0 you have a hole in your topology. Revise your segmentations. About error 2), does that happens after a long time computing, or just in the begining? it seems to me that this is normal screen messages for the program. Could you provide a little bit more information on it?

HTH
Thanks,

BEATRIZ