Error in image history

[thutchison]

I have received the following error a few times when attempting to go back to a previous state of an image.  When it happens I cannot save the project. 

<* failed *>
*** PCL Unix Signal Handler: Critical signal caught (11): Segmentation violation

PixInsight 1.8.8-4 - Critical Signal Backtrace
Received signal 11 (SIGSEGV)
Module: 0   PixInsight                          0x0000000104c6bd8e InitializePixInsightModule + 1849342
================================================================================
 46: 1   libsystem_platform.dylib            0x00007fff71c2fb5d _sigtramp + 29
 45: 2   PixInsight                          0x0000000103f689e0 PixInsight + 3230176
 44: 3   PixInsight                          0x0000000103f3bbb6 PixInsight + 3046326
 43: 4   PixInsight                          0x0000000103f693a4 PixInsight + 3232676
 42: 5   PixInsight                          0x0000000103f735c5 PixInsight + 3274181
 41: 6   PixInsight                          0x0000000103ecd85f PixInsight + 2594911
 40: 7   QtCore                              0x0000000106d5b053 _ZN11QMetaObject8activateEP7QObjectiiPPv + 1843
 39: 8   QtWidgets                           0x00000001060eaf2d _ZN11QTreeWidget5eventEP6QEvent + 2733
 38: 9   QtCore                              0x0000000106d5b053 _ZN11QMetaObject8activateEP7QObjectiiPPv + 1843
 37: 10  QtWidgets                           0x0000000106060887 _ZN17QAbstractItemView9activatedERK11QModelIndex + 55
 36: 11  QtWidgets                           0x00000001060d1852 _ZN9QTreeView21mouseDoubleClickEventEP11QMouseEvent + 930
 35: 12  QtWidgets                           0x0000000105e356bc _ZN7QWidget5eventEP6QEvent + 460
 34: 13  QtWidgets                           0x0000000105edb95b _ZN6QFrame5eventEP6QEvent + 43
 33: 14  QtWidgets                           0x000000010605f169 _ZN17QAbstractItemView13viewportEventEP6QEvent + 1417
 32: 15  QtWidgets                           0x00000001060cdfa1 _ZN9QTreeView13viewportEventEP6QEvent + 513
 31: 16  QtCore                              0x0000000106d2b32e _ZN23QCoreApplicationPrivate29sendThroughObjectEventFiltersEP7QObjectP6QEvent + 206
 30: 17  QtWidgets                           0x0000000105dfac0b _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent + 251
 29: 18  QtWidgets                           0x0000000105dfdb86 _ZN12QApplication6notifyEP7QObjectP6QEvent + 7670
 28: 19  PixInsight                          0x0000000103d8c504 PixInsight + 1279236
 27: 20  QtCore                              0x0000000106d2b094 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent + 212
 26: 21  QtWidgets                           0x0000000105dfb547 _ZN19QApplicationPrivate14sendMouseEventEP7QWidgetP11QMouseEventS1_S1_PS1_R8QPointerIS0_Ebb + 903
 25: 22  QtWidgets                           0x0000000105e5491f _ZN14QDesktopWidget11qt_metacallEN11QMetaObject4CallEiPPv + 9087
 24: 23  QtWidgets                           0x0000000105e5366a _ZN14QDesktopWidget11qt_metacallEN11QMetaObject4CallEiPPv + 4298
 23: 24  QtWidgets                           0x0000000105dfac20 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent + 272
 22: 25  QtWidgets                           0x0000000105dfbfd5 _ZN12QApplication6notifyEP7QObjectP6QEvent + 581
 21: 26  PixInsight                          0x0000000103d8c504 PixInsight + 1279236
 20: 27  QtCore                              0x0000000106d2b094 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent + 212
 19: 28  QtGui                               0x00000001063f398f _ZN22QGuiApplicationPrivate17processMouseEventEPN29QWindowSystemInterfacePrivate10MouseEventE + 6303
 18: 29  QtGui                               0x00000001063da4bb _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE + 219
 17: 30  libqcocoa.dylib                     0x000000010ade33e8 qt_plugin_instance + 180424
 16: 31  CoreFoundation                      0x00007fff45a65b2b __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
 15: 32  CoreFoundation                      0x00007fff45a65ad1 __CFRunLoopDoSource0 + 108
 14: 33  CoreFoundation                      0x00007fff45a499db __CFRunLoopDoSources0 + 195
 13: 34  CoreFoundation                      0x00007fff45a48fa3 __CFRunLoopRun + 1196
 12: 35  CoreFoundation                      0x00007fff45a488a5 CFRunLoopRunSpecific + 459
 11: 36  HIToolbox                           0x00007fff44c991ab RunCurrentEventLoopInMode + 292
 10: 37  HIToolbox                           0x00007fff44c98ded ReceiveNextEventCommon + 355
  9: 38  HIToolbox                           0x00007fff44c98c76 _BlockUntilNextEventMatchingListInModeWithFilter + 64
  8: 39  AppKit                              0x00007fff4303077d _DPSNextEvent + 1135
  7: 40  AppKit                              0x00007fff4302f46b -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1361(+1361)
  6: 41  AppKit                              0x00007fff43029588 -[NSApplication run] + 699
  5: 42  libqcocoa.dylib                     0x000000010ade2258 qt_plugin_instance + 175928
  4: 43  QtCore                              0x0000000106d2663f _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE + 431
  3: 44  QtCore                              0x0000000106d2b6e2 _ZN16QCoreApplication4execEv + 130
  2: 45  PixInsight                          0x0000000103da4b0c PixInsight + 1379084
  1: 46  libdyld.dylib                       0x00007fff71a443d5 start + 1
================================================================================

[Juan Conejero]

This cannot be reproduced, and has not been reported before AFAIK.

Can you please provide a project where this can be reproduced? (for example, by uploading it to Dropbox or a similar cloud storage service).