QSql::Location : enum type redefinition

[abenchaaben]

Does the error contain any other hint?
E.g. where it finds the other definition?

Cheers,
_

Thank you for replying. It's not the only error, i have QSql::ParamTypeFlag : enum type redefinition, QSql::TableType : enum type redefinition, QSql::NumericalPrecisionPolicy : enum type redefinition ..... But i guess it's the same problem. Like i say, i dont think that my source code is the problem. I compiled with Qt and visual 2012 before. But when i do it with Qt and visual 2015, i have this problem with the qt headers.