diff --git a/Makefile b/Makefile
index fc23b70..f12c055 100755
--- a/Makefile
+++ b/Makefile
@@ -50,8 +50,11 @@ obj-std-spec	=
 # Configuration files
 config		= gcc.cfg
 
+# Target folder
+folder		:= $(shell fxsdk --folder)
 ifndef folder
-folder		= /usr/share/fxsdk
+$(error "Could not get the fxSDK storage folder. Did you install fxSDK \
+properly?")
 endif
 
 
diff --git a/TODO b/TODO
index 25baea0..d1a6f87 100644
--- a/TODO
+++ b/TODO
@@ -1,7 +1,6 @@
 Bugs to fix:
--  Left-vram overflow when rendering text
--  A few key hits ignored after leaving the application (could not reproduce)
--  Lost keyboard control at startup (could not reproduce)
+-  A few key hits ignored after leaving the application  (could not reproduce)
+-  Lost keyboard control at startup                      (could not reproduce)
 
 Simple improvements:
 -  bopti:	Monochrome bitmaps blending modes
@@ -12,7 +11,6 @@ Simple improvements:
 -  time:	Compute CLOCKS_PER_SEC
 -  core:	Add VBR handlers debugging information (if possible)
 -  core:	Implement all callbacks and a complete user API
--  project:	Enhance Makefile install_lib rules
 
 Modules to implement:
 -  Serial communication
diff --git a/demo/gintdemo.c b/demo/gintdemo.c
index 114aa13..de90854 100644
--- a/demo/gintdemo.c
+++ b/demo/gintdemo.c
@@ -403,20 +403,24 @@ void main_menu(int *category, int *app)
 			switch(getkey())
 			{
 			case KEY_F1:
+				if(!tab) break;
 				tab	= 0;
 				index	= 0;
 				break;
 			case KEY_F2:
+				if(tab == 1) break;
 				tab	= 1;
 				index	= 0;
 				scroll	= 0;
 				break;
 			case KEY_F3:
+				if(tab == 2) break;
 				tab	= 2;
 				index	= 0;
 				scroll	= 0;
 				break;
 			case KEY_F4:
+				if(tab == 3) break;
 				tab	= 3;
 				index	= 0;
 				scroll	= 0;
diff --git a/demo/resources/clock_7305.bmp b/demo/resources/clock_7305.bmp
index 83690f6..6e7170b 100644
Binary files a/demo/resources/clock_7305.bmp and b/demo/resources/clock_7305.bmp differ
diff --git a/demo/test_tales.c b/demo/test_tales.c
index 644fc23..1a64352 100644
--- a/demo/test_tales.c
+++ b/demo/test_tales.c
@@ -113,7 +113,7 @@ void test_tales(void)
 			for(int j = 0; j < 16; j++) str[j] = 32 + (i << 4) + j;
 			str[16] = 0;
 
-			gtext(2, 2 + i * height, str);
+			gtext(-10, 2 + i * height, str);
 		}
 
 		gimage(0, 56, &res_opt_tales);
diff --git a/demo/test_timer.c b/demo/test_timer.c
index 7178be4..2f634d3 100644
--- a/demo/test_timer.c
+++ b/demo/test_timer.c
@@ -35,8 +35,8 @@ static void timing_timer(void)
 
 static void timing_start(void)
 {
-	timer_start(TIMER_USER, 16, Clock_Hz, timing_timer, 0);
-	rtc_cb_edit(cb_id, RTCFreq_16Hz, timing_rtc);
+	timer_start(TIMER_USER, 64, Clock_Hz, timing_timer, 0);
+	rtc_cb_edit(cb_id, RTCFreq_64Hz, timing_rtc);
 
 	elapsed_timer = 0;
 	elapsed_rtc = 0;
@@ -177,20 +177,20 @@ static void draw(int tab)
 			dimage(64, 0, &res_clock_7305);
 
 			getFreq(buffer, conf.RTCCLK_f);
-			small_text(84, 14, buffer, 1);
+			small_text(82, 13, buffer, 1);
 	
 			sprintf(buffer, "*%d", conf.FLL);
-			small_text(84, 25, buffer, 1);
+			small_text(82, 23, buffer, 1);
 
 			sprintf(buffer, "*%d", conf.PLL);
-			small_text(84, 36, buffer, 1);
+			small_text(82, 33, buffer, 1);
 
 			sprintf(buffer, "/%d", conf.Bphi_div1);
-			small_text(89, 43, buffer, 0);
+			small_text(87, 40, buffer, 0);
 			sprintf(buffer, "/%d", conf.Iphi_div1);
-			small_text(89, 50, buffer, 0);
+			small_text(87, 47, buffer, 0);
 			sprintf(buffer, "/%d", conf.Pphi_div1);
-			small_text(89, 57, buffer, 0);
+			small_text(87, 54, buffer, 0);
 		}
 	}
 	else
@@ -216,7 +216,7 @@ static void draw(int tab)
 			if(timer <= rtc) ratio = (10000 * timer) / rtc;
 			else ratio = (10000 * rtc) / timer;
 
-			print(12, 5, "%d.%02d %%", ratio / 100, ratio % 100);
+			print(12, 5, "%d.%02d%%", ratio / 100, ratio % 100);
 		}
 		else locate(12, 5, "...");
 	}
@@ -238,14 +238,11 @@ void test_timer(void)
 {
 	int tab = 0;
 
-	clock_measure();
-	clock_measure_end();
-
 	conf = clock_config();
 
 	elapsed_timer	= -1;
 	elapsed_rtc	= -1;
-	cb_id = rtc_cb_add(RTCFreq_16Hz, timing_start, 0);
+	cb_id = rtc_cb_add(RTCFreq_64Hz, timing_start, 0);
 
 	text_configure(NULL, Color_Black);
 
diff --git a/src/tales/tales_internals.c b/src/tales/tales_internals.c
index dbef3dd..838291e 100644
--- a/src/tales/tales_internals.c
+++ b/src/tales/tales_internals.c
@@ -253,7 +253,7 @@ void render(int x, int y, const char *str, void (*op)(OPERATE_ARGS))
 		// When operators are full, updating the video ram and
 		// preparing the operators for another row.
 
-		(*op)(operators, height, x, y);
+		if(x >= 0) (*op)(operators, height, x, y);
 		x += 32;
 		if(x > 96) break;