IUS and Query-Tree Tool / xtree

Hello, I can't get the Query-Tree Tool (xtree) started, neither using onperf nor on command-line. I only get the message: Warning: Representation size 4 must match superclass's to override reportCallback Changing data structure forces termination of xtree. Are there extra configuration requirements, or is this a bug? Thank, Henrik -- /----------------------------------------------------------------------\\ |Henrik Loeser | email: loeser@informatik.uni-kl.de | |Dept. of Computer Science | http://www.uni-kl.de/AG-Haerder/Loeser/ | |University of Kaiserslautern| | |P.O. Box 3049 | Phone: (+49) 631 205 3283 | |D-67653 Kaiserslautern | Fax : (+49) 631 205 3299 | |Germany | | \\----------------------------------------------------------------------/ "asd dsjiusa sdasd uhiuh hhhajief okas aksjda lkja ytf!"