maybe try this?

engine/server/library/serverDatabase/src/shared/Persister.cpp

@@ -602,9 +602,7 @@ void Persister::saveCompleted(Snapshot *completedSnapshot)
 	SnapshotListType::iterator i=std::remove(m_savingSnapshots.begin(),m_savingSnapshots.end(),completedSnapshot);
 	if (i!=m_savingSnapshots.end())
 	{
-        delete *i;
-		i = m_savingSnapshots.erase(i, m_savingSnapshots.end());
-        *i = nullptr;
+		m_savingSnapshots.erase(i, m_savingSnapshots.end());
 
 		if (m_savingSnapshots.empty() && ConfigServerDatabase::getReportSaveTimes())
 		{
@@ -637,11 +635,16 @@ void Persister::saveCompleted(Snapshot *completedSnapshot)
 	{
 		SnapshotListType::iterator j=std::remove(m_savingCharacterSnapshots.begin(),m_savingCharacterSnapshots.end(),completedSnapshot);
 DEBUG_FATAL(i==m_savingCharacterSnapshots.end(),("Programmer bug:  SaveCompleted() called with a snapshot that wasn't in m_savingSnapshots or m_savingCharacterSnapshots."));
-        delete *j;
-        *j = nullptr;
-		j = m_savingCharacterSnapshots.erase(j, m_savingCharacterSnapshots.end());
+        m_savingCharacterSnapshots.erase(j, m_savingCharacterSnapshots.end());
 		DEBUG_REPORT_LOG(ConfigServerDatabase::getReportSaveTimes(),("New character save completed\n"));
 	}
+
+    if (completedSnapshot) {
+        delete completedSnapshot;
+        completedSnapshot = nullptr; // in case of double deletes by any other pointers to this thing
+    } else {
+        DEBUG_WARNING(true, ("We just attempted a double delete!"));
+    }
 }
 
 // ----------------------------------------------------------------------