Well, I finally solve it, by starting a new project in Xubuntu Netbeans. I kept everything the same, not only classes but also the Substance LAF library and it's working perfectly.
The only difference is the in name of the project folder, originally was 'Calculador Validade Concessões' and now I've changed it to 'Calculador Validade Concessoes'. I think it it was caused caused by the 'õ' character in project folder name, since java code files are Unicode.