Memory Leak 4GL Debugger 7.30.HC4?

Does anyone know how I can test for memory leak in 4GL debugger? I have 10 modules all of which compile ok. 9 of the modules also work ok with the debugger but 1 module gives a 410 error the first time it is run with the debugger and just hangs the second time. (This worked fine with the previous release of the debugger) The executable also runs fine. Any other modules run with the debugger after that also hang. All the modules have similar PREPARE statements and the module that fails is not the largest. Sysadmin checked for memory and other resources and it seems nothing is wrong at unix level All suggestions welcomed .. Sue