diff --git a/libmulti.gms2/extensions/libmulti/libmulti.dll b/libmulti.gms2/extensions/libmulti/libmulti.dll
index 0ed3f7a..95bf6a2 100644
Binary files a/libmulti.gms2/extensions/libmulti/libmulti.dll and b/libmulti.gms2/extensions/libmulti/libmulti.dll differ
diff --git a/libmulti.gms2/extensions/libmulti/libmulti.yy b/libmulti.gms2/extensions/libmulti/libmulti.yy
index 14bd786..3063dd7 100644
--- a/libmulti.gms2/extensions/libmulti/libmulti.yy
+++ b/libmulti.gms2/extensions/libmulti/libmulti.yy
@@ -37,6 +37,24 @@
             "filename": "libmulti.dll",
             "final": "",
             "functions": [
+                {
+                    "id": "c5041168-ecc6-30e1-002b-d4b72da3b6c9",
+                    "modelName": "GMExtensionFunction",
+                    "mvc": "1.0",
+                    "argCount": 4,
+                    "args": [
+                        1,
+                        1,
+                        1,
+                        1
+                    ],
+                    "externalName": "RegisterCallbacks",
+                    "help": "RegisterCallbacks(please, dont, call, it) : Do not call this function at all.",
+                    "hidden": false,
+                    "kind": 1,
+                    "name": "RegisterCallbacks",
+                    "returnType": 1
+                },
                 {
                     "id": "d5415e82-a8ba-05e7-e2b7-ca142935a78e",
                     "modelName": "GMExtensionFunction",
diff --git a/libmulti.gms23/extensions/libmulti/libmulti.dll b/libmulti.gms23/extensions/libmulti/libmulti.dll
index 0ed3f7a..95bf6a2 100644
Binary files a/libmulti.gms23/extensions/libmulti/libmulti.dll and b/libmulti.gms23/extensions/libmulti/libmulti.dll differ
diff --git a/libmulti.gms23/extensions/libmulti/libmulti.yy b/libmulti.gms23/extensions/libmulti/libmulti.yy
index ac4e9a1..dd288d6 100644
--- a/libmulti.gms23/extensions/libmulti/libmulti.yy
+++ b/libmulti.gms23/extensions/libmulti/libmulti.yy
@@ -17,6 +17,12 @@
   "installdir": "",
   "files": [
     {"filename":"libmulti.dll","origname":"","init":"","final":"","kind":1,"uncompress":false,"functions":[
+        {"externalName":"RegisterCallbacks","kind":1,"help":"RegisterCallbacks(please, dont, call, it) : Do not call this function at all.","hidden":false,"returnType":1,"argCount":4,"args":[
+            1,
+            1,
+            1,
+            1,
+          ],"resourceVersion":"1.0","name":"RegisterCallbacks","tags":[],"resourceType":"GMExtensionFunction",},
         {"externalName":"libmulti_init","kind":1,"help":"libmulti_init() ->real  :  Initializes the library.","hidden":false,"returnType":2,"argCount":0,"args":[],"resourceVersion":"1.0","name":"libmulti_init","tags":[],"resourceType":"GMExtensionFunction",},
         {"externalName":"libmulti_quit","kind":1,"help":"libmulti_quit() ->real  :  Destroys all windows and frees the library resources.","hidden":false,"returnType":2,"argCount":0,"args":[],"resourceVersion":"1.0","name":"libmulti_quit","tags":[],"resourceType":"GMExtensionFunction",},
         {"externalName":"libmulti_present","kind":1,"help":"libmulti_present() ->real  :  Returns true if the DLL is present and was loaded.","hidden":false,"returnType":2,"argCount":0,"args":[],"resourceVersion":"1.0","name":"libmulti_present","tags":[],"resourceType":"GMExtensionFunction",},
@@ -183,6 +189,7 @@
       ],"ProxyFiles":[
         {"resourceType":"GMProxyFile","TargetMask":6,"name":"libmulti_x64.dll","tags":[],"resourceVersion":"1.0",},
       ],"copyToTargets":64,"order":[
+        {"name":"RegisterCallbacks","path":"extensions/libmulti/libmulti.yy",},
         {"name":"libmulti_init","path":"extensions/libmulti/libmulti.yy",},
         {"name":"libmulti_quit","path":"extensions/libmulti/libmulti.yy",},
         {"name":"libmulti_present","path":"extensions/libmulti/libmulti.yy",},
diff --git a/libmulti.gms23/extensions/libmulti/libmulti_x64.dll b/libmulti.gms23/extensions/libmulti/libmulti_x64.dll
index c96330c..1169efa 100644
Binary files a/libmulti.gms23/extensions/libmulti/libmulti_x64.dll and b/libmulti.gms23/extensions/libmulti/libmulti_x64.dll differ
diff --git a/libmulti.gmx/extensions/libmulti.extension.gmx b/libmulti.gmx/extensions/libmulti.extension.gmx
index da21456..ebef420 100644
--- a/libmulti.gmx/extensions/libmulti.extension.gmx
+++ b/libmulti.gmx/extensions/libmulti.extension.gmx
@@ -45,6 +45,20 @@
       </ConfigOptions>
       <ProxyFiles/>
       <functions>
+        <function>
+          <name>RegisterCallbacks</name>
+          <externalName>RegisterCallbacks</externalName>
+          <kind>1</kind>
+          <help>RegisterCallbacks(please, dont, call, it) : Do not call this function at all.</help>
+          <returnType>1</returnType>
+          <argCount>4</argCount>
+          <args>
+            <arg>1</arg>
+            <arg>1</arg>
+            <arg>1</arg>
+            <arg>1</arg>
+          </args>
+        </function>
         <function>
           <name>libmulti_init</name>
           <externalName>libmulti_init</externalName>
diff --git a/libmulti.gmx/extensions/libmulti/libmulti.dll b/libmulti.gmx/extensions/libmulti/libmulti.dll
index 0ed3f7a..95bf6a2 100644
Binary files a/libmulti.gmx/extensions/libmulti/libmulti.dll and b/libmulti.gmx/extensions/libmulti/libmulti.dll differ
diff --git a/libmulti/libmulti.cpp b/libmulti/libmulti.cpp
index e9b8863..55f45de 100644
--- a/libmulti/libmulti.cpp
+++ b/libmulti/libmulti.cpp
@@ -378,11 +378,12 @@ static LRESULT WINAPI WindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lPar
 	return ret;
 }
 
-dllx void RegisterCallbacks(char* p1, char* p2, char* p3, char* p4) {
+dllx char* RegisterCallbacks(char* p1, char* p2, char* p3, char* p4) {
 	CBDispatch = reinterpret_cast<CBDispatch_t>(p1);
 	CBCreateDsMap = reinterpret_cast<CBCreateDsMap_t>(p2);
 	CBDsMapAddReal = reinterpret_cast<CBDsMapAddReal_t>(p3);
 	CBDsMapAddString = reinterpret_cast<CBDsMapAddString_t>(p4);
+	return nullptr; // TODO: Change this when GmxGen updates.
 }
 
 dllx double libmulti_init() {
diff --git a/libmulti/libmulti.h b/libmulti/libmulti.h
index 901b7ef..8723c25 100644
--- a/libmulti/libmulti.h
+++ b/libmulti/libmulti.h
@@ -35,6 +35,8 @@ void libmulti_legacy_mutex_quit();
 /* GmxGen stuff below, change as needed: */
 #define dllx extern "C" __declspec(dllexport)
 
+/// Do not call this function at all.
+dllx char* RegisterCallbacks(char* please, char* dont, char* call, char* it);
 ///->real : Initializes the library.
 dllx double libmulti_init();
 ///->real : Destroys all windows and frees the library resources.