cassandra - can`t read from key_validation_class = 'CompositeType(UTF8Type,UTF8Type)'

Question

I´m trying to read from cassandra 1.1.6. This is the script in cassandra-cli

CREATE COLUMN FAMILY aaa
with column_type = 'Standard'
and comparator = 'UTF8Type'
and default_validation_class = 'UTF8Type'
and key_validation_class = 'CompositeType(UTF8Type,UTF8Type)';

When I tried to read with thrift with

c1.getColumn().getValue()

or with

client.get_slice(toByteBuffer(rowKey), parent, predicate, ConsistencyLevel.ONE);

I receive the following exception:

Exception in thread "main" InvalidRequestException(why:Not enough bytes to read value of component 0)