Cannot compile generated classes in Java

Hi!

I followed the instructions at [1] but am unable to compile the schemas I
defined.
The problem is casting from Object to another type and it looks like it's
the same as here [2].

For example:
this.device = data().deepCopy(fields()[1].schema(), other.device);
The RHS is of type Object.

[2] mentions that the problem is with Maven's Avro plugin but I can't
figure out how to fix it. I can't even get it working when compiling the
sources by hand:

java -jar
~/.m2/repository/org/apache/avro/avro-tools/1.7.4/avro-tools-1.7.4.jar
compile schema src/main/avro/ src/main/java

Please help!

[1] http://avro.apache.org/docs/current/gettingstartedjava.html
[2]
http://search-hadoop.com/m/5kwYILlAHw1/avro+incompatible+types닦=1+7+3+regression+