2015-09-22 15:29:17.693 java[10451:12761730] java.lang.NullPointerException
2015-09-22 15:29:17.711 java[10451:12761730] (
        0   CoreFoundation                      0x00007fff8cc2a03c __exceptionPreprocess + 172
        1   libobjc.A.dylib                     0x00007fff8bcbe76e objc_exception_throw + 43
        2   CoreFoundation                      0x00007fff8cc29bd9 -[NSException raise] + 9
        3   JavaNativeFoundation                0x00000001247e0446 JNFCallVoidMethod + 227
        4   libawt_lwawt.dylib                  0x000000017272c1ac -[CDropTarget performDragOperation:] + 613
        5   libawt_lwawt.dylib                  0x000000017271cacf -[AWTView performDragOperation:] + 57
        6   AppKit                              0x00007fff9276f4dd NSCoreDragReceiveMessageProc + 345
        7   HIServices                          0x00007fff95125e72 DoMultipartDropMessage + 327
        8   HIServices                          0x00007fff95125b74 DoDropMessage + 41
        9   HIServices                          0x00007fff95125b20 SendDropMessage + 43
        10  HIServices                          0x00007fff95124899 DragInApplication + 513
        11  HIServices                          0x00007fff951236ab CoreDragStartDragging + 535
        12  AppKit                              0x00007fff9276b67e -[NSCoreDragManager _dragUntilMouseUp:accepted:] + 1020
        13  AppKit                              0x00007fff92768367 -[NSCoreDragManager dragImage:fromWindow:at:offset:event:pasteboard:source:slideBack:] + 1540
        14  AppKit                              0x00007fff92767d49 -[NSWindow(NSDrag) dragImage:at:offset:event:pasteboard:source:slideBack:] + 135
        15  libawt_lwawt.dylib                  0x0000000172729d11 -[CDragSource doDrag] + 489
        16  Foundation                          0x00007fff88b1add0 __NSThreadPerformPerform + 293
        17  CoreFoundation                      0x00007fff8cb46a01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
        18  CoreFoundation                      0x00007fff8cb38b8d __CFRunLoopDoSources0 + 269
        19  CoreFoundation                      0x00007fff8cb381bf __CFRunLoopRun + 927
        20  CoreFoundation                      0x00007fff8cb37bd8 CFRunLoopRunSpecific + 296
        21  HIToolbox                           0x00007fff87d5056f RunCurrentEventLoopInMode + 235
        22  HIToolbox                           0x00007fff87d502ea ReceiveNextEventCommon + 431
        23  HIToolbox                           0x00007fff87d5012b _BlockUntilNextEventMatchingListInModeWithFilter + 71
        24  AppKit                              0x00007fff925438ab _DPSNextEvent + 978
        25  AppKit                              0x00007fff92542e58 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 346
        26  libosxapp.dylib                     0x00000001727ca0dd -[NSApplicationAWT nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
        27  AppKit                              0x00007fff92538af3 -[NSApplication run] + 594
        28  libosxapp.dylib                     0x00000001727c9eda +[NSApplicationAWT runAWTLoopWithApp:] + 157
        29  libawt_lwawt.dylib                  0x000000017274a606 +[AWTStarter starter:headless:] + 834
        30  JavaNativeFoundation                0x00000001247e3d3a +[JNFRunLoop _performCopiedBlock:] + 17
        31  Foundation                          0x00007fff88b1add0 __NSThreadPerformPerform + 293
        32  CoreFoundation                      0x00007fff8cb46a01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
        33  CoreFoundation                      0x00007fff8cb38b8d __CFRunLoopDoSources0 + 269
        34  CoreFoundation                      0x00007fff8cb381bf __CFRunLoopRun + 927
        35  CoreFoundation                      0x00007fff8cb37bd8 CFRunLoopRunSpecific + 296
        36  java                                0x000000010c50ddd7 CreateExecutionEnvironment + 867
        37  java                                0x000000010c50a36f JLI_Launch + 1519
        38  java                                0x000000010c51082f main + 283
        39  java                                0x000000010c509574 start + 52