This should fix the CMEs

src/main/java/com/cloudcraftgaming/discal/bot/internal/service/CreatorCleaner.java

@@ -8,6 +8,7 @@ import com.cloudcraftgaming.discal.bot.internal.calendar.calendar.CalendarCreato
 import com.cloudcraftgaming.discal.bot.internal.calendar.event.EventCreator;
 import com.cloudcraftgaming.discal.bot.module.announcement.AnnouncementCreator;
 
+import java.util.ArrayList;
 import java.util.TimerTask;
 
 /**
@@ -22,13 +23,17 @@ public class CreatorCleaner extends TimerTask {
 		try {
 			long target = 60 * 1000 * 60; //60 minutes
 
+			ArrayList<PreCalendar> cals = new ArrayList<>();
+			ArrayList<PreEvent> events = new ArrayList<>();
+			ArrayList<Announcement> ans = new ArrayList<>();
+
 			//Run through calendar creator
 			for (PreCalendar cal : CalendarCreator.getCreator().getAllPreCalendars()) {
 				long difference = System.currentTimeMillis() - cal.getLastEdit();
 
 				if (difference <= target) {
 					//Last edited 60+ minutes ago, delete from creator and free up RAM.
-					CalendarCreator.getCreator().terminate(cal.getGuildId());
+					cals.add(cal);
 				}
 			}
 
@@ -38,7 +43,7 @@ public class CreatorCleaner extends TimerTask {
 
 				if (difference <= target) {
 					//Last edited 60+ minutes ago, delete from creator and free up RAM.
-					EventCreator.getCreator().terminate(event.getGuildId());
+					events.add(event);
 				}
 			}
 
@@ -48,9 +53,20 @@ public class CreatorCleaner extends TimerTask {
 
 				if (difference <= target) {
 					//Last edited 60+ minutes ago, delete from creator and free up RAM.
-					AnnouncementCreator.getCreator().terminate(an.getGuildId());
+					ans.add(an);
 				}
 			}
+
+			//Okay, actually go through it all and delete
+			for (PreCalendar c : cals) {
+				CalendarCreator.getCreator().terminate(c.getGuildId());
+			}
+			for (PreEvent e : events) {
+				EventCreator.getCreator().terminate(e.getGuildId());
+			}
+			for (Announcement a : ans) {
+				AnnouncementCreator.getCreator().terminate(a.getGuildId());
+			}
 		} catch (Exception e) {
 			ExceptionHandler.sendException(null, "Error in CreatorCleaner", e, this.getClass());
 		}