diff --git a/src/gui/components/cc_frm_signalbars.cpp b/src/gui/components/cc_frm_signalbars.cpp
index ed43f3ade..edc7804c2 100644
--- a/src/gui/components/cc_frm_signalbars.cpp
+++ b/src/gui/components/cc_frm_signalbars.cpp
@@ -339,10 +339,9 @@ void CSignalBox::paintScale()
 void CSignalBox::paint(bool do_save_bg)
 {
 	//paint frame and body
-	if (!is_painted){
-		initSignalItems();
+	initSignalItems();
+	if (!is_painted)
 		paintForm(do_save_bg);
-	}
 
 	//paint current signal value
 	paintScale();
diff --git a/src/gui/components/cc_frm_signalbars.h b/src/gui/components/cc_frm_signalbars.h
index be9ade31c..c27b69962 100644
--- a/src/gui/components/cc_frm_signalbars.h
+++ b/src/gui/components/cc_frm_signalbars.h
@@ -296,7 +296,10 @@ class CSignalBox : public CComponentsForm, public CCTextScreen
 		///returns the signal object, type = CSignalBar*
 		CSignalBar* getScaleObject(){return sbar;};
 		///returns the signal noise ratio object, type = CSignalNoiseRatioBar*
-		CSignalNoiseRatioBar* getLabelObject(){return snrbar;};
+		CSignalNoiseRatioBar* getLabelObject(){return snrbar;}
+
+		///assigns the current used frontend, simplified a tuner object, see frontend_c.h
+		void setFrontEnd(CFrontend *frontend_ref){sbx_frontend = frontend_ref;}
 
 		///sets the caption color of signalbars, see also property 'sbx_caption_color'
 		void setTextColor(const fb_pixel_t& caption_color){ sbx_caption_color = caption_color;};
diff --git a/src/gui/imageinfo_ni.cpp b/src/gui/imageinfo_ni.cpp
index f5769a66b..f6c6ccb55 100644
--- a/src/gui/imageinfo_ni.cpp
+++ b/src/gui/imageinfo_ni.cpp
@@ -34,7 +34,7 @@
 #include <driver/fontrenderer.h>
 #include <driver/rcinput.h>
 #include <driver/screen_max.h>
-#include <driver/vfd.h>
+#include <driver/display.h>
 
 #include <sys/utsname.h>
 
diff --git a/src/gui/infoviewer.cpp b/src/gui/infoviewer.cpp
index 870c781c3..b7bbd40d7 100644
--- a/src/gui/infoviewer.cpp
+++ b/src/gui/infoviewer.cpp
@@ -1747,7 +1747,8 @@ void CInfoViewer::showSNR ()
 			sigbox->setColorBody(numbox->getColorBody());
 			sigbox->doPaintBg(false);
 			sigbox->enableTboxSaveScreen(numbox->getColBodyGradientMode());
-		}
+		}else
+			sigbox->setFrontEnd(CFEManager::getInstance()->getLiveFE());
 		sigbox->paint(CC_SAVE_SCREEN_NO);
 	}
 	if(showButtonBar)
diff --git a/src/gui/lua/lua_messagebox.cpp b/src/gui/lua/lua_messagebox.cpp
index 3d5760525..303db0541 100644
--- a/src/gui/lua/lua_messagebox.cpp
+++ b/src/gui/lua/lua_messagebox.cpp
@@ -66,7 +66,7 @@ int CLuaInstMessagebox::MessageboxExec(lua_State *L)
 	tableLookup(L, "name", name) || tableLookup(L, "title", name) || tableLookup(L, "caption", name);
 	tableLookup(L, "text", text);
 	tableLookup(L, "icon", icon);
-	lua_Integer timeout = -1, width = 450, return_default_on_timeout = 0, show_buttons = CMessageBox::mbAll, default_button = CMessageBox::mbrYes;
+	lua_Integer timeout = -1, width = 450, return_default_on_timeout = 0, show_buttons = 0, default_button = 0;
 	tableLookup(L, "timeout", timeout);
 	tableLookup(L, "width", width);
 	tableLookup(L, "return_default_on_timeout", return_default_on_timeout);
@@ -80,13 +80,13 @@ int CLuaInstMessagebox::MessageboxExec(lua_State *L)
 			{ "right",	CMessageBox::mbBtnAlignRight },
 			{ NULL,		0 }
 		};
-		show_buttons = 0;
 		for (int i = 0; mb[i].name; i++)
 			if (!strcmp(mb[i].name, tmp.c_str())) {
 				show_buttons |= mb[i].code;
 				break;
 			}
 	}
+
 	lua_pushstring(L, "buttons");
 	lua_gettable(L, -2);
 	for (lua_pushnil(L); lua_next(L, -2); lua_pop(L, 2)) {
@@ -108,6 +108,8 @@ int CLuaInstMessagebox::MessageboxExec(lua_State *L)
 			}
 	}
 	lua_pop(L, 1);
+	if ((show_buttons & 0xFF) == 0)
+		show_buttons |= CMessageBox::mbAll;
 
 	table_key mbr[] = {
 		{ "yes",	CMessageBox::mbrYes },
@@ -118,7 +120,6 @@ int CLuaInstMessagebox::MessageboxExec(lua_State *L)
 		{ NULL,		0 }
 	};
 	if (tableLookup(L, "default", tmp)) {
-		default_button = 0;
 		for (int i = 0; mbr[i].name; i++)
 			if (!strcmp(mbr[i].name, tmp.c_str())) {
 				default_button = mbr[i].code;