diff --git a/scripting/practicemode.sp b/scripting/practicemode.sp
index ba64a1c..91b4245 100644
--- a/scripting/practicemode.sp
+++ b/scripting/practicemode.sp
@@ -1105,6 +1105,8 @@ public Action OnClientSayCommand(int client, const char[] command, const char[]
   if (g_AllowNoclipCvar.IntValue != 0 && StrEqual(text, ".noclip") && IsPlayer(client)) {
     PerformNoclipAction(client);
   }
+
+  return Plugin_Handled;
 }
 
 public void PerformNoclipAction(int client) {
@@ -1375,11 +1377,12 @@ public void OnEntityCreated(int entity, const char[] className) {
 // the owner is set by the time practicemode gets to the grenade.
 public int OnEntitySpawned(int entity) {
   RequestFrame(DelayedOnEntitySpawned, entity);
+  return 0;
 }
 
 public int DelayedOnEntitySpawned(int entity) {
   if (!IsValidEdict(entity)) {
-    return;
+    return 0;
   }
 
   char className[CLASS_LENGTH];
@@ -1441,6 +1444,8 @@ public int DelayedOnEntitySpawned(int entity) {
       }
     }
   }
+
+  return 0;
 }
 
 public Action Timer_TeleportClient(Handle timer, int serial) {
@@ -1450,6 +1455,8 @@ public Action Timer_TeleportClient(Handle timer, int serial) {
     TeleportEntity(client, g_TestingFlashOrigins[client], g_TestingFlashAngles[client], velocity);
     SetEntityMoveType(client, MOVETYPE_NONE);
   }
+
+  return Plugin_Handled;
 }
 
 public Action Timer_FakeGrenadeBack(Handle timer, int serial) {
@@ -1457,11 +1464,13 @@ public Action Timer_FakeGrenadeBack(Handle timer, int serial) {
   if (g_InPracticeMode && IsPlayer(client)) {
     FakeClientCommand(client, "sm_lastgrenade");
   }
+
+  return Plugin_Handled;
 }
 
 public Action Event_WeaponFired(Event event, const char[] name, bool dontBroadcast) {
   if (!g_InPracticeMode) {
-    return;
+    return Plugin_Handled;
   }
 
   int userid = event.GetInt("userid");
@@ -1472,13 +1481,17 @@ public Action Event_WeaponFired(Event event, const char[] name, bool dontBroadca
   if (IsGrenadeWeapon(weapon) && IsPlayer(client)) {
     AddGrenadeToHistory(client);
   }
+
+  return Plugin_Handled;
 }
 
 public Action Event_SmokeDetonate(Event event, const char[] name, bool dontBroadcast) {
   if (!g_InPracticeMode) {
-    return;
+    return Plugin_Handled;
   }
   GrenadeDetonateTimerHelper(event, "smoke grenade");
+
+  return Plugin_Handled;
 }
 
 public void GrenadeDetonateTimerHelper(Event event, const char[] grenadeName) {
@@ -1503,7 +1516,7 @@ public void GrenadeDetonateTimerHelper(Event event, const char[] grenadeName) {
 
 public Action Event_FlashDetonate(Event event, const char[] name, bool dontBroadcast) {
   if (!g_InPracticeMode) {
-    return;
+    return Plugin_Handled;
   }
 
   int userid = event.GetInt("userid");
@@ -1515,6 +1528,8 @@ public Action Event_FlashDetonate(Event event, const char[] name, bool dontBroad
   }
 
   g_LastFlashDetonateTime[client] = GetGameTime();
+
+  return Plugin_Handled;
 }
 
 public void GetTestingFlashInfo(int serial) {
diff --git a/scripting/practicemode/botreplay_data.sp b/scripting/practicemode/botreplay_data.sp
index a8237eb..09d5621 100644
--- a/scripting/practicemode/botreplay_data.sp
+++ b/scripting/practicemode/botreplay_data.sp
@@ -48,6 +48,8 @@ public int ReplaysMenuHandler(Menu menu, MenuAction action, int param1, int para
   } else if (action == MenuAction_End) {
     delete menu;
   }
+
+  return 0;
 }
 
 public void MaybeWriteNewReplayData() {
diff --git a/scripting/practicemode/botreplay_utils.sp b/scripting/practicemode/botreplay_utils.sp
index 185b205..d2eee4f 100644
--- a/scripting/practicemode/botreplay_utils.sp
+++ b/scripting/practicemode/botreplay_utils.sp
@@ -183,7 +183,7 @@ stock bool IsReplayPlaying(int role = -1) {
 public void GotoReplayStart(int client, const char[] id, int role) {
   char filepath[PLATFORM_MAX_PATH + 1];
   GetRoleFile(id, role, filepath, sizeof(filepath));
-  int header[BMFileHeader];
+  BMFileHeader header;
   BMError error = BotMimic_GetFileHeaders(filepath, header, sizeof(header));
   if (error != BM_NoError) {
     char errorString[128];
@@ -195,16 +195,16 @@ public void GotoReplayStart(int client, const char[] id, int role) {
   float origin[3];
   float angles[3];
   float velocity[3];
-  Array_Copy(header[BMFH_initialPosition], origin, 3);
-  Array_Copy(header[BMFH_initialAngles], angles, 3);
+  Array_Copy(header.BMFH_initialPosition, origin, 3);
+  Array_Copy(header.BMFH_initialAngles, angles, 3);
   TeleportEntity(client, origin, angles, velocity);
 }
 
 // Functions to add a replay nade during a recording session to the practicemode-extra data
 // saved with replays.
-public void AddReplayNade(int client, GrenadeType type, float delay, const float[3] personOrigin,
-                   const float[3] personAngles, const float[3] grenadeOrigin,
-                   const float[3] grenadeVelocity) {
+public void AddReplayNade(int client, GrenadeType type, float delay, const float personOrigin[3],
+                   const float personAngles[3], const float grenadeOrigin[3],
+                   const float grenadeVelocity[3]) {
   int index = g_NadeReplayData[client].Push(type);
   g_NadeReplayData[client].Set(index, view_as<int>(delay), 1);
   g_NadeReplayData[client].Set(index, view_as<int>(personOrigin[0]), 2);
diff --git a/scripting/practicemode/bots.sp b/scripting/practicemode/bots.sp
index 159293e..73b311c 100644
--- a/scripting/practicemode/bots.sp
+++ b/scripting/practicemode/bots.sp
@@ -51,6 +51,8 @@ public Action Event_PlayerDeath(Event event, const char[] name, bool dontBroadca
   if (IsPMBot(victim)) {
     g_BotDeathTime[victim] = GetGameTime();
   }
+
+  return Plugin_Handled;
 }
 
 public Action Timer_RespawnBots(Handle timer) {
@@ -447,7 +449,7 @@ public Action Event_BotDamageDealtEvent(Event event, const char[] name, bool don
 // It probably needs to use the flashbang_detonate event (so piggyback on Event_FlashDetonate).
 public Action Event_PlayerBlind(Event event, const char[] name, bool dontBroadcast) {
   if (!g_InPracticeMode) {
-    return;
+    return Plugin_Handled;
   }
 
   int userid = event.GetInt("userid");
@@ -471,6 +473,8 @@ public Action Event_PlayerBlind(Event event, const char[] name, bool dontBroadca
   if (g_ClientNoFlash[client]) {
     RequestFrame(KillFlashEffect, GetClientSerial(client));
   }
+
+  return Plugin_Handled;
 }
 
 public void KillFlashEffect(int serial) {
diff --git a/scripting/practicemode/commands.sp b/scripting/practicemode/commands.sp
index 1927ce8..adaa7c6 100644
--- a/scripting/practicemode/commands.sp
+++ b/scripting/practicemode/commands.sp
@@ -492,6 +492,8 @@ public int ChangeMapHandler(Menu menu, MenuAction action, int param1, int param2
   } else if (action == MenuAction_End) {
     delete menu;
   }
+
+  return 0;
 }
 
 public void ChangeSettingById(const char[] id, bool setting) {
diff --git a/scripting/practicemode/grenade_menus.sp b/scripting/practicemode/grenade_menus.sp
index 61b1c38..06a9fc5 100644
--- a/scripting/practicemode/grenade_menus.sp
+++ b/scripting/practicemode/grenade_menus.sp
@@ -236,7 +236,7 @@ public int Grenade_PlayerAndCategoryHandler(Menu menu, MenuAction action, int pa
 
     if (StrEqual(buffer, "all")) {
       GiveGrenadeMenu(client, GrenadeMenuType_OneCategory, 0, "all");
-      return;
+      return 0;
     }
 
     // split buffer from "auth name" (seperated by whitespace)
@@ -252,6 +252,8 @@ public int Grenade_PlayerAndCategoryHandler(Menu menu, MenuAction action, int pa
   } else if (action == MenuAction_End) {
     delete menu;
   }
+
+  return 0;
 }
 
 public int Grenade_NadeHandler(Menu menu, MenuAction action, int param1, int param2) {
@@ -270,6 +272,8 @@ public int Grenade_NadeHandler(Menu menu, MenuAction action, int param1, int par
   } else if (action == MenuAction_End) {
     delete menu;
   }
+
+  return 0;
 }
 
 int SortIdArrayByName(int index1, int index2, Handle array, Handle hndl) {
@@ -352,4 +356,6 @@ public Action _CountCategoryNades_Helper(const char[] ownerName, const char[] ow
     p.WriteCell(count);
     p.WriteString(cat);
   }
+
+  return Plugin_Handled;
 }
diff --git a/scripting/practicemode/grenade_utils.sp b/scripting/practicemode/grenade_utils.sp
index eef1bd9..64a4119 100644
--- a/scripting/practicemode/grenade_utils.sp
+++ b/scripting/practicemode/grenade_utils.sp
@@ -372,8 +372,8 @@ public void GetGrenadeVector(const char[] auth, const char[] id, const char[] ke
   }
 }
 
-public void SetGrenadeVectors(const char[] auth, const char[] id, const float[3] origin,
-                       const float[3] angles) {
+public void SetGrenadeVectors(const char[] auth, const char[] id, const float origin[3],
+                       const float angles[3]) {
   g_UpdatedGrenadeKv = true;
   if (g_GrenadeLocationsKv.JumpToKey(auth)) {
     if (g_GrenadeLocationsKv.JumpToKey(id)) {
@@ -386,7 +386,7 @@ public void SetGrenadeVectors(const char[] auth, const char[] id, const float[3]
 }
 
 public void SetGrenadeParameters(const char[] auth, const char[] id, GrenadeType type,
-                          const float[3] grenadeOrigin, const float[3] grenadeVelocity) {
+                          const float grenadeOrigin[3], const float grenadeVelocity[3]) {
   if (!IsGrenade(type)) {
     return;
   }
@@ -453,7 +453,7 @@ public float GetClientGrenadeFloat(int id, const char[] key) {
   return GetGrenadeFloat(auth, nadeId, key);
 }
 
-public void SetClientGrenadeVectors(int id, const float[3] origin, const float[3] angles) {
+public void SetClientGrenadeVectors(int id, const float origin[3], const float angles[3]) {
   char auth[AUTH_LENGTH];
   char nadeId[GRENADE_ID_LENGTH];
   IntToString(id, nadeId, sizeof(nadeId));
@@ -461,8 +461,8 @@ public void SetClientGrenadeVectors(int id, const float[3] origin, const float[3
   SetGrenadeVectors(auth, nadeId, origin, angles);
 }
 
-public void SetClientGrenadeParameters(int id, GrenadeType type, const float[3] grenadeOrigin,
-                                const float[3] grenadeVelocity) {
+public void SetClientGrenadeParameters(int id, GrenadeType type, const float grenadeOrigin[3],
+                                const float grenadeVelocity[3]) {
   char auth[AUTH_LENGTH];
   char nadeId[GRENADE_ID_LENGTH];
   IntToString(id, nadeId, sizeof(nadeId));
@@ -644,6 +644,8 @@ public Action TranslateGrenadeHelper(const char[] ownerName, const char[] ownerA
   origin[0] += dx;
   origin[1] += dy;
   origin[2] += dz;
+
+  return Plugin_Handled;
 }
 
 public int FindNextGrenadeId(int client, int currentId) {
@@ -746,6 +748,8 @@ public Action IsCorrectionNeededHelper(const char[] ownerName, const char[] owne
     g_RepeatIdSeen = true;
   }
   g_AllIds.Push(id);
+
+  return Plugin_Handled;
 }
 
 public void CorrectGrenadeIds() {
@@ -790,6 +794,8 @@ public Action CorrectGrenadeIdsHelper(const char[] ownerName, const char[] owner
     }
   }
   g_NewKv.Rewind();
+
+  return Plugin_Handled;
 }
 
 public bool CanEditGrenade(int client, int id) {
diff --git a/scripting/practicemode/natives.sp b/scripting/practicemode/natives.sp
index 57596cd..e02e77d 100644
--- a/scripting/practicemode/natives.sp
+++ b/scripting/practicemode/natives.sp
@@ -15,6 +15,8 @@ public APLRes AskPluginLoad2(Handle myself, bool late, char[] error, int err_max
   CreateNative("PM_MessageToAll", Native_MessageToAll);
   CreateNative("PM_AddChatAlias", Native_AddChatAlias);
   RegPluginLibrary("practicemode");
+
+  return APLRes_Success;
 }
 
 public int Native_StartPracticeMode(Handle plugin, int numParams) {
@@ -85,7 +87,7 @@ public int Native_IsSettingEnabled(Handle plugin, int numParams) {
 public int Native_Message(Handle plugin, int numParams) {
   int client = GetNativeCell(1);
   if (client != 0 && (!IsClientConnected(client) || !IsClientInGame(client)))
-    return;
+    return 0;
 
   char buffer[1024];
   int bytesWritten = 0;
@@ -107,6 +109,8 @@ public int Native_Message(Handle plugin, int numParams) {
     Colorize(finalMsg, sizeof(finalMsg));
     PrintToChat(client, finalMsg);
   }
+
+  return 0;
 }
 
 public int Native_MessageToAll(Handle plugin, int numParams) {
@@ -135,6 +139,8 @@ public int Native_MessageToAll(Handle plugin, int numParams) {
       PrintToConsole(i, finalMsg);
     }
   }
+
+  return 0;
 }
 
 public int Native_AddChatAlias(Handle plugin, int numParams) {
@@ -148,4 +154,6 @@ public int Native_AddChatAlias(Handle plugin, int numParams) {
     g_ChatAliases.PushString(alias);
     g_ChatAliasesCommands.PushString(command);
   }
+
+  return 0;
 }
diff --git a/scripting/practicemode/settings_menu.sp b/scripting/practicemode/settings_menu.sp
index 36f278d..0ff2a17 100644
--- a/scripting/practicemode/settings_menu.sp
+++ b/scripting/practicemode/settings_menu.sp
@@ -50,4 +50,6 @@ public int SettingsMenuHandler(Menu menu, MenuAction action, int param1, int par
   } else if (action == MenuAction_End) {
     delete menu;
   }
+
+  return 0;
 }