Index: /trunk/src/VBox/Main/src-server/DHCPServerImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/DHCPServerImpl.cpp	(revision 79774)
+++ /trunk/src/VBox/Main/src-server/DHCPServerImpl.cpp	(revision 79775)
@@ -388,6 +388,6 @@
                     if (pCurConfig == pConfig)
                     {
+                        m->groupConfigs.erase(it++); /* Post increment returns copy of original that is then erased. */
                         fFound = true;
-                        it = m->groupConfigs.erase(it);
                     }
                     else
@@ -405,6 +405,6 @@
                     if (pCurConfig == pConfig)
                     {
+                        m->individualConfigs.erase(it++); /* Post increment returns copy of original that is then erased. */
                         fFound = true;
-                        it = m->individualConfigs.erase(it);
                     }
                     else