diff --git a/public/IExtensionSys.h b/public/IExtensionSys.h
index 9667095d..31b8d647 100644
--- a/public/IExtensionSys.h
+++ b/public/IExtensionSys.h
@@ -368,6 +368,28 @@ namespace SourceMod
 		 */
 		virtual bool UnloadExtension(IExtension *pExt) =0;
 	};
+
+	#define SM_IFACEPAIR(name) SMINTERFACE_##name##_NAME, SMINTERFACE_##name##_VERSION
+
+	#define SM_FIND_IFACE_OR_FAIL(prefix, variable, errbuf, errsize) \
+		if (!sharesys->RequestInterface(SM_IFACEPAIR(prefix), myself, (SMInterface **)&variable)) \
+		{ \
+			if (errbuf) \
+			{ \
+				size_t len = snprintf(errbuf, \
+					errsize, \
+					"Could not find interface: %s (version: %d)", \
+					SM_IFACEPAIR(prefix)); \
+				if (len >= errsize) \
+				{ \
+					buffer[errsize - 1] = '\0'; \
+				} \
+			} \
+			return false; \
+		}
+
+	#define SM_FIND_IFACE(prefix, variable) \
+		sharesys->RequestInterface(SM_IFACEPAIR(prefix), myself, (SMInterface **)&variable));
 }
 
 #endif //_INCLUDE_SOURCEMOD_MODULE_INTERFACE_H_
diff --git a/public/sample_ext/sdk/smsdk_ext.cpp b/public/sample_ext/sdk/smsdk_ext.cpp
index 618ce3b8..9934974f 100644
--- a/public/sample_ext/sdk/smsdk_ext.cpp
+++ b/public/sample_ext/sdk/smsdk_ext.cpp
@@ -280,7 +280,11 @@ IServerGameDLL *gamedll = NULL;				/**< IServerGameDLL pointer */
 /** Exposes the extension to Metamod */
 SMM_API void *PL_EXPOSURE(const char *name, int *code)
 {
+#if defined METAMOD_PLAPI_VERSION
+	if (name && !strcmp(name, METAMOD_PLAPI_NAME))
+#else
 	if (name && !strcmp(name, PLAPI_NAME))
+#endif
 	{
 		if (code)
 		{
@@ -301,8 +305,13 @@ bool SDKExtension::Load(PluginId id, ISmmAPI *ismm, char *error, size_t maxlen,
 {
 	PLUGIN_SAVEVARS();
 
+#if defined METAMOD_PLAPI_VERSION
 	GET_V_IFACE_ANY(serverFactory, gamedll, IServerGameDLL, INTERFACEVERSION_SERVERGAMEDLL);
 	GET_V_IFACE_CURRENT(engineFactory, engine, IVEngineServer, INTERFACEVERSION_VENGINESERVER);
+#else
+	GET_V_IFACE_ANY(GetServerFactory, gamedll, IServerGameDLL, INTERFACEVERSION_SERVERGAMEDLL);
+	GET_V_IFACE_CURRENT(GetEngineFactory, engine, IVEngineServer, INTERFACEVERSION_VENGINESERVER);
+#endif
 
 	m_SourceMMLoaded = true;
 
diff --git a/public/sample_ext/sdk/smsdk_ext.h b/public/sample_ext/sdk/smsdk_ext.h
index 83038a72..b37ce03f 100644
--- a/public/sample_ext/sdk/smsdk_ext.h
+++ b/public/sample_ext/sdk/smsdk_ext.h
@@ -290,11 +290,15 @@ extern IServerGameDLL *gamedll;
 #define SM_GET_IFACE(prefix, addr) \
 	if (!g_pShareSys->RequestInterface(SM_MKIFACE(prefix), myself, (SMInterface **)&addr)) \
 	{ \
-		if (error) \
+		if (error != NULL && maxlength) \
 		{ \
-			snprintf(error, maxlength, "Could not find interface: %s (version: %d)", SMINTERFACE_##prefix##_NAME, SMINTERFACE_##prefix##_VERSION); \
-			return false; \
+			size_t len = snprintf(error, maxlength, "Could not find interface: %s", SMINTERFACE_##prefix##_NAME); \
+			if (len >= maxlength) \
+			{ \
+				error[maxlength - 1] = '\0'; \
+			} \
 		} \
+		return false; \
 	}
 /** Automates retrieving SourceMod interfaces when needed outside of SDK_OnLoad() */
 #define SM_GET_LATE_IFACE(prefix, addr) \
@@ -303,11 +307,15 @@ extern IServerGameDLL *gamedll;
 #define SM_CHECK_IFACE(prefix, addr) \
 	if (!addr) \
 	{ \
-		if (error) \
+		if (error != NULL && maxlength) \
 		{ \
-			snprintf(error, maxlength, "Could not find interface: %s", SMINTERFACE_##prefix##_NAME); \
-			return false; \
+			size_t len = snprintf(error, maxlength, "Could not find interface: %s", SMINTERFACE_##prefix##_NAME); \
+			if (len >= maxlength) \
+			{ \
+				error[maxlength - 1] = '\0'; \
+			} \
 		} \
+		return false; \
 	}
 
 #endif // _INCLUDE_SOURCEMOD_EXTENSION_BASESDK_H_