We are using the Rights management service successfully when working with policies etc but when we try to return data by consuming the 'searchForEvents' method using the sample code which matches yours - all we get returned is an empty object. We can use the same criteria to export a test file by consuming the service 'exportevents' and the contents of the text file are as expected.
Its a bit strange and I'd be interested to know if anyone has used this successfully.
Cheers
Errol
