diff --git a/programs/develop/tinypad/history.txt b/programs/develop/tinypad/history.txt
index 6d7330797..772c33b82 100644
--- a/programs/develop/tinypad/history.txt
+++ b/programs/develop/tinypad/history.txt
@@ -1,6 +1,10 @@
 
 HISTORY:
 
+4.1.1 (18/09/2026, Leency)
+  bug-fixes:
+    - fixed crash on deleting the whole text (Ctrl+A, Del)
+
 4.1  (17/07/2015, Pathoswithin)
     - various fixes
 
diff --git a/programs/develop/tinypad/tinypad.asm b/programs/develop/tinypad/tinypad.asm
index 83bc88c89..7098ad7fb 100644
--- a/programs/develop/tinypad/tinypad.asm
+++ b/programs/develop/tinypad/tinypad.asm
@@ -5,8 +5,8 @@
 ; project name:      TINYPAD
 ; compiler:          flat assembler 1.67.21
 ; memory to compile: 3.0/9.0 MBytes (without/with size optimizations)
-; version:           SVN (4.1)
-; last update:       2015-07-17 (Jul 17, 2015)
+; version:           SVN (4.1.1)
+; last update:       2026-09-18 (Sep 18, 2026)
 ; minimal kernel:    revision #4199 (https://git.kolibrios.org/KolibriOS/kolibrios/src/branch/main/kernel/trunk)
 ;-----------------------------------------------------------------------------
 ; originally by:     Ville Michael Turjanmaa >> villemt@aton.co.jyu.fi
@@ -40,7 +40,7 @@ include 'tinypad.inc'
 
 __header '01',1,@CODE,TINYPAD_END,STATIC_MEM_END,MAIN_STACK,@PARAMS,ini_path
 
-APP_VERSION equ '4.1'
+APP_VERSION equ '4.1.1'
 
 TRUE = 1
 FALSE = 0
diff --git a/programs/develop/tinypad/tp-common.asm b/programs/develop/tinypad/tp-common.asm
index 86e83f38d..b784c4aef 100644
--- a/programs/develop/tinypad/tp-common.asm
+++ b/programs/develop/tinypad/tp-common.asm
@@ -355,7 +355,7 @@ proc line_add_spaces ;////////////////////////////////////////////////////////
 ;  ESI = line offset
 ;  ECX = needed line length
 ; Output:
-;  EAX = delta
+;  EAX = delta, CF = 1 on failure
 ;-----------------------------------------------------------------------------
 	xor	eax,eax
 	pushad
@@ -365,6 +365,7 @@ proc line_add_spaces ;////////////////////////////////////////////////////////
 	sub	ecx,edx
 	lea	eax,[ecx+sizeof.EDITOR_LINE_DATA]
 	call	editor_realloc_lines
+	jc	.failed
 	mov	[esp+4*7],eax
 	add	esi,eax
 	push	ecx
@@ -388,6 +389,26 @@ proc line_add_spaces ;////////////////////////////////////////////////////////
 	rep	stosb
   .exit:
 	popad
+	clc
+	ret
+  .failed:
+	popad
+	stc
+	ret
+endp
+
+;-----------------------------------------------------------------------------
+proc set_lines_terminator ;///////////////////////////////////////////////////
+;-----------------------------------------------------------------------------
+; Lines buffer is terminated by a line header with zero Size, restore it after
+; the data has been compacted (line count decreased)
+;-----------------------------------------------------------------------------
+	push	ecx esi
+	mov	ecx,[cur_editor.Lines.Count]
+	call	get_line_offset
+	mov	[esi+EDITOR_LINE_DATA.Size],0
+	mov	[esi+EDITOR_LINE_DATA.Flags],0
+	pop	esi ecx
 	ret
 endp
 
@@ -408,6 +429,7 @@ proc delete_selection ;///////////////////////////////////////////////////////
 	or	[esi+EDITOR_LINE_DATA.Flags],EDITOR_LINE_FLAG_MOFIFIED
 	mov	ecx,[sel.begin.x]
 	call	line_add_spaces
+	jc	.abort
 	add	esi,eax
 	lea	edi,[esi+sizeof.EDITOR_LINE_DATA]
 	mov	ecx,[sel.end.y]
@@ -456,6 +478,8 @@ proc delete_selection ;///////////////////////////////////////////////////////
 	rep	movsb
 
   .exit:
+	call	set_lines_terminator
+
 	mov	eax,[sel.begin.x]
 	mov	[cur_editor.Caret.X],eax
 	mov	[cur_editor.SelStart.X],eax
@@ -478,6 +502,11 @@ proc delete_selection ;///////////////////////////////////////////////////////
 	clc
 	ret
 
+  .abort:
+	popad
+	clc
+	ret
+
   .exit.2:
 	stc
 	ret
diff --git a/programs/develop/tinypad/tp-editor.asm b/programs/develop/tinypad/tp-editor.asm
index c94c0de06..31311c577 100644
--- a/programs/develop/tinypad/tp-editor.asm
+++ b/programs/develop/tinypad/tp-editor.asm
@@ -993,17 +993,30 @@ endp
 proc editor_realloc_lines ;///// ADD $DELTA$ TO LINES SIZE ///////////////////
 ;-----------------------------------------------------------------------------
 ; EAX = delta
+; Output:
+;  EAX = buffer displacement, CF = 1 on failure (buffer left untouched)
 ;-----------------------------------------------------------------------------
 	push	ebx ecx
 	mov	ebx,[cur_editor.Lines.Size]
+	push	ebx
 	add	ebx,eax
 	mov	eax,[cur_editor.Lines]
 	mov	[cur_editor.Lines.Size],ebx
 	mov	ecx,eax
 	stdcall mem.ReAlloc,eax,ebx
+	test	eax,eax
+	jz	.failed
+	add	esp,4
 	mov	[cur_editor.Lines],eax
 	sub	eax,ecx
 	pop	ecx ebx
+	clc
+	ret
+  .failed:
+	pop	[cur_editor.Lines.Size]
+	xor	eax,eax
+	pop	ecx ebx
+	stc
 	ret
 endp
 
diff --git a/programs/develop/tinypad/tp-files.asm b/programs/develop/tinypad/tp-files.asm
index 06f6769a2..0786b2351 100644
--- a/programs/develop/tinypad/tp-files.asm
+++ b/programs/develop/tinypad/tp-files.asm
@@ -237,6 +237,7 @@ proc load_from_memory ;///////////////////////////////////////////////////////
 	lea	edx,[ebx+ecx]
 	imul	ebx,eax,16
 	add	ebx,edx
+	add	ebx,sizeof.EDITOR_LINE_DATA
 	mov	[ebp+EDITOR.Lines.Size],ebx
 	stdcall mem.ReAlloc,[ebp+EDITOR.Lines],ebx
 	mov	[ebp+EDITOR.Lines],eax
diff --git a/programs/develop/tinypad/tp-key.asm b/programs/develop/tinypad/tp-key.asm
index 2c9d18038..020e11cdd 100644
--- a/programs/develop/tinypad/tp-key.asm
+++ b/programs/develop/tinypad/tp-key.asm
@@ -591,10 +591,12 @@ proc key.ctrl_v ;///// PASTE ///////////////////////////////////
 	mov	eax,[copy_size]
 	sub	eax,sizeof.EDITOR_LINE_DATA
 	call	editor_realloc_lines
+	jc	.exit_1
 	mov	ecx,[cur_editor.Caret.Y]
 	call	get_line_offset
 	mov	ecx,[cur_editor.Caret.X]
 	call	line_add_spaces
+	jc	.exit_1
 	pushd	[esi+EDITOR_LINE_DATA.Size]
 	push	esi
 	lea	eax,[esi+ecx+sizeof.EDITOR_LINE_DATA]
@@ -692,6 +694,7 @@ proc key.ctrl_d ;///// INSERT SEPARATOR ////////////////////////
 ;---------------------------------------------------------------
 	mov	eax,90+sizeof.EDITOR_LINE_DATA
 	call	editor_realloc_lines
+	jc	.exit
 
 	mov	ecx,[cur_editor.Caret.Y]
 	call	get_line_offset
@@ -748,6 +751,7 @@ proc key.ctrl_y ;///// DELETE CURRENT LINE /////////////////////
 	shr	ecx,2
 	cld
 	rep	movsd
+	call	set_lines_terminator
 
 	pop	eax
 	add	eax,sizeof.EDITOR_LINE_DATA
@@ -1151,6 +1155,7 @@ proc key.del ;///// DELETE NEXT CHAR OR SELECTION //////////////
 
   .ok.dec.lines:
 	dec	[cur_editor.Lines.Count]
+	call	set_lines_terminator
 	mov	eax,[cur_editor.Lines.Count]
 	cmp	[cur_editor.Caret.Y],eax
 	jb	@f
@@ -1264,6 +1269,7 @@ proc key.tab ;///// TABULATE ///////////////////////////////////
 	push	eax
 	call	editor_realloc_lines
 	pop	eax
+	jc	.failed
 	mov	ecx,[cur_editor.Caret.Y]
 	call	get_line_offset
 	and	[esi+EDITOR_LINE_DATA.Flags],not EDITOR_LINE_FLAG_SAVED
@@ -1282,6 +1288,7 @@ proc key.tab ;///// TABULATE ///////////////////////////////////
 	push	eax
 	mov	eax,10
 	call	editor_realloc_lines
+	jc	.failed.1
 	add	esi,eax
 	pop	eax
 	pushad
@@ -1332,6 +1339,12 @@ proc key.tab ;///// TABULATE ///////////////////////////////////
 
   .exit:
 	ret
+
+  .failed.1:
+	pop	eax
+  .failed:
+	add	esp,4*2
+	ret
 endp
 
 ;---------------------------------------------------------------
@@ -1342,6 +1355,7 @@ proc key.return ;///// CARRIAGE RETURN /////////////////////////
 ; so you should do a little more value
 	mov	eax,14*100
 	call	editor_realloc_lines
+	jc	.exit
 
 	mov	ecx,[cur_editor.Caret.Y]
 	call	get_line_offset