[MonetDB-users] JDBC driver

I installed MonetDB_JDBC-1.2-Blunt-SR1.jar and I am getting the following problem when I try to load MonetDriver using class.forName():

java.lang.UnsupportedClassVersionError: nl/cwi/monetdb/jdbc/MonetDriver (Unsupported major.minor version 49.0).

Does any of you know what the problem is?

Cheers, Rodrigo