Translated by Google as : My icon: Mass Properties does not work !!! Help-me? The material is already configured and even then solid does not give me the weight.
Can you post your Part here? It will be difficult to determine the problem without it. See How can I attach a file to a forum post? if you aren't familiar with the process.
Attach your file pal, If you can't do that for any limitation for copyright I will give you to try simple some steps for check it if your file has some errors.