Java; VM; Vendor = 1.6.0_07; Java HotSpot(TM) Client VM 10.0-b23; Sun Microsystems Inc.
Runtime = Java(TM) SE Runtime Environment 1.6.0_07-b06
System Locale; Encoding = cs_CZ (nb); Cp1250

Steps to reproduce the failure using JConsole:

 1/ Create new project AnagramGame (NetBeans) on a path containing special characters.
    I've used "E:\Projects\¿š¿\AnagramGame"
 2/ Start the project from within the IDE
 3/ Start JConsole, select the AnagramGame process and connect to it
 4/ In MBeans tab, navigate to com.sun.management.HotSpotDiagnostic | Operations | dumpHeap
 5/ Enter "E:\Projects\¿š¿\AnagramGame\dump.hprof" for p0 and "true" for p1
 6/ Press the heapDump button, JConsole fails to take the dump and shows an Error dialog

- when "E:\Projects\¿š¿\AnagramGame\dump.hprof" is used, dumping the heap fails
- when "E:\Projects\dump.hprof" is used, dumping the heap works as expected

The same behavior exsist in Japanese locale