diff --git a/Lisp/ssg_load.lsp b/Lisp/ssg_load.lsp
index b8910ce..08c578a 100644
--- a/Lisp/ssg_load.lsp
+++ b/Lisp/ssg_load.lsp
@@ -11,13 +11,15 @@
 ;;   (load "pfad/ssg_dialog.lsp")
 ;; ============================================================
 
-(defun ssg-load-libs (/ base-path)
-  ;; Pfad dieser Datei als Basis verwenden (AutoCAD 2000+)
+(defun ssg-load-libs (/ base-path found)
+  ;; Pfad ermitteln: 1) DXFM_LISP, 2) findfile, 3) DWGPREFIX
   (setq base-path
-    (if (findfile "ssg_core.lsp")
-      (substr (findfile "ssg_core.lsp") 1
-              (- (strlen (findfile "ssg_core.lsp")) (strlen "ssg_core.lsp")))
-      (strcat (getvar "DWGPREFIX"))
+    (cond
+      ((getenv "DXFM_LISP")
+       (strcat (vl-string-translate "\\" "/" (getenv "DXFM_LISP")) "/"))
+      ((setq found (findfile "ssg_core.lsp"))
+       (substr found 1 (- (strlen found) (strlen "ssg_core.lsp"))))
+      (t (getvar "DWGPREFIX"))
     )
   )
   (load (strcat base-path "ssg_core.lsp")   "ssg_core.lsp nicht gefunden")
diff --git a/bin/on_start.lsp b/bin/on_start.lsp
deleted file mode 100644
index 9c1263a..0000000
--- a/bin/on_start.lsp
+++ /dev/null
@@ -1,120 +0,0 @@
-;; ============================================================
-;; on_start.lsp - SSG_LIB Startup fuer BricsCAD
-;; Wird beim Start von BricsCAD automatisch ausgefuehrt
-;; ============================================================
-
-(defun ssg-lib-safe-load (datei / result)
-  (setq result (vl-catch-all-apply 'load (list datei)))
-  (if (vl-catch-all-error-p result)
-    (progn
-      (princ (strcat "\n[SSG_LIB] FEHLER beim Laden von " datei ":"))
-      (princ (strcat "\n  " (vl-catch-all-error-message result)))
-      nil
-    )
-    t
-  )
-)
-
-;; ------------------------------------------------------------
-;; SSG-DBG-FN - Prueft ob ein AutoLISP-Symbol gebunden ist
-;; Gibt "JA" oder "NEIN" zurueck (atoms-family, BRX-Cmds nicht pruefbar)
-;; ------------------------------------------------------------
-(defun ssg-dbg-fn (fname)
-  (if (car (atoms-family 1 (list fname))) "JA" "NEIN")
-)
-
-;; ------------------------------------------------------------
-;; SSG-LIB-REGISTER-CHECK - Verfuegbarkeit aller Befehle ins Debug-Log schreiben
-;; ------------------------------------------------------------
-(defun ssg-lib-register-check ()
-  (dbgmsg "[CHECK] --- AutoLISP Funktionen (atoms-family) ---")
-  (dbgmsg (strcat "ssg-start:            " (ssg-dbg-fn "SSG-START")))
-  (dbgmsg (strcat "ssg-end:              " (ssg-dbg-fn "SSG-END")))
-  (dbgmsg (strcat "ssg-make-layer:       " (ssg-dbg-fn "SSG-MAKE-LAYER")))
-  (dbgmsg (strcat "ssg-errhan:           " (ssg-dbg-fn "SSG-ERRHAN")))
-  (dbgmsg (strcat "ensure-block-loaded:  " (ssg-dbg-fn "ENSURE-BLOCK-LOADED")))
-  (dbgmsg "[CHECK] --- SSG_LIB_Commands (c:...) ---")
-  (dbgmsg (strcat "c:ILS_BTMT_Beladung:  " (ssg-dbg-fn "C:ILS_BTMT_BELADUNG")))
-  (dbgmsg (strcat "c:ILS_K90LA:          " (ssg-dbg-fn "C:ILS_K90LA")))
-  (dbgmsg (strcat "c:ILS_TEF_Strecke:    " (ssg-dbg-fn "C:ILS_TEF_STRECKE")))
-  (dbgmsg (strcat "c:KreiselInsert:      " (ssg-dbg-fn "C:KREISELINSERT")))
-  (dbgmsg (strcat "c:KreiselEdit:        " (ssg-dbg-fn "C:KREISELEDIT")))
-  (dbgmsg (strcat "c:ILS_Eckrad:         " (ssg-dbg-fn "C:ILS_ECKRAD")))
-  (dbgmsg (strcat "c:OMNI_AP60:          " (ssg-dbg-fn "C:OMNI_AP60")))
-  (dbgmsg (strcat "c:OMNI_APB_630_90:    " (ssg-dbg-fn "C:OMNI_APB_630_90")))
-  (dbgmsg (strcat "c:OMNI_W90_Einfach:   " (ssg-dbg-fn "C:OMNI_W90_EINFACH")))
-  (dbgflush)
-)
-
-(defun ssg-lib-startup ( / lisp-pfad menu-pfad curr-srch menu-datei lsp-fb-pfad)
-
-  ;; Pfade aus Umgebungsvariablen lesen
-  (setq lisp-pfad (getenv "DXFM_LISP"))
-  (setq menu-pfad (getenv "DXFMAKRO"))
-
-  ;; Pfadtrenner vereinheitlichen: Backslash -> Forward-Slash
-  (if lisp-pfad  (setq lisp-pfad  (vl-string-translate "\\" "/" lisp-pfad)))
-  (if menu-pfad  (setq menu-pfad  (vl-string-translate "\\" "/" menu-pfad)))
-
-  (if (null lisp-pfad)
-    (progn
-      (princ "\n[SSG_LIB] FEHLER: DXFM_LISP nicht gesetzt!")
-      (princ "\n[SSG_LIB] Bitte zuerst bin\\setenv.bat ausfuehren.")
-    )
-    (progn
-      ;; Debug-Logging so frueh wie moeglich starten
-      (if (findfile (strcat lisp-pfad "/ssg_dbg.lsp"))
-        (progn
-          (load (strcat lisp-pfad "/ssg_dbg.lsp"))
-          (dbgopen "debugfile.dbg" "DXFM_LOG")
-          (dbgmsg "[on_start] Startup begonnen")
-          (dbgmsg (strcat "[on_start] DXFM_LISP=" lisp-pfad))
-          (dbgmsg (strcat "[on_start] DXFMAKRO=" (if menu-pfad menu-pfad "nicht gesetzt")))
-          (dbgflush)
-        )
-      )
-
-      (princ "\n[SSG_LIB] Lade SSG_LIB Umgebung...")
-
-      ;; Library laden (direkt, damit Fehler sichtbar sind)
-      ;; Kein SRCHPATH-Aendern noetig - alle Dateien werden ueber
-      ;; absolute Pfade (Umgebungsvariablen) geladen
-      (if (findfile (strcat lisp-pfad "/ssg_load.lsp"))
-        (progn
-          (load (strcat lisp-pfad "/ssg_load.lsp"))
-          (princ "\n[SSG_LIB] ssg_load.lsp geladen.")
-        )
-        (princ "\n[SSG_LIB] WARNUNG: ssg_load.lsp nicht gefunden!")
-      )
-
-      ;; Menue laden
-      (if menu-pfad
-        (progn
-          (setq menu-datei (strcat menu-pfad "/menu/SSG_LIB.mnu"))
-          (if (findfile menu-datei)
-            (progn
-              (command "_.MENULOAD" menu-datei)
-              (menucmd "P13=+SSG_LIB.POP1")
-              (princ "\n[SSG_LIB] Menue SSG_LIB geladen und eingebunden.")
-            )
-            (princ (strcat "\n[SSG_LIB] WARNUNG: " menu-datei " nicht gefunden!"))
-          )
-        )
-        (princ "\n[SSG_LIB] WARNUNG: DXFMAKRO nicht gesetzt, Menue nicht geladen!")
-      )
-
-      ;; DBLCLKEDIT=1: Doppelklick aktiv, ***DOUBLECLICK-Eintraege steuern Block-Verhalten
-      (setvar "DBLCLKEDIT" 1)
-
-      (dbgflush)
-
-      (ssg-lib-register-check)
-
-      (princ "\n[SSG_LIB] Startup abgeschlossen.")
-    )
-  )
-  (princ)
-)
-
-;; Startup ausfuehren
-(ssg-lib-startup)