diff --git a/src/LoginCustomer.c b/src/LoginCustomer.c
index 5c2a7a4..8f3a760 100644
--- a/src/LoginCustomer.c
+++ b/src/LoginCustomer.c
@@ -1,4 +1,4 @@
-#include "LoginCustomer.h"
+#include "loginCustomer.h"
 
 bool checkLogin(bool loginSuccessful)
 {	
diff --git a/src/LoginCustomer.h b/src/LoginCustomer.h
index 809765b..e1c68e8 100644
--- a/src/LoginCustomer.h
+++ b/src/LoginCustomer.h
@@ -2,7 +2,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <string.h>
-#include "CustomerProperties.h"
+#include "customerProperties.h"
 #define MAX_LOGIN_ATTEMPTS 3
 char *generateCheckString(char *, char*);
 bool checkLogin(bool);
diff --git a/src/a.exe b/src/a.exe
deleted file mode 100644
index 7bbd2e2..0000000
Binary files a/src/a.exe and /dev/null differ
diff --git a/src/updateCustomerAccountBalance.c b/src/updateCustomerAccountBalance.c
index 6986e08..7cb7d3e 100644
--- a/src/updateCustomerAccountBalance.c
+++ b/src/updateCustomerAccountBalance.c
@@ -2,10 +2,29 @@
 #include "currentCustomerAccountBalance.c"
 #include "lineReplacer.h"
 
+void troubleShoot(int errorCode){
+    printf("Error! The requested operation was terminated because of an issue. Here are some details about the error:\n---------------\n");
+
+    switch(errorCode){
+        case 0:
+            printf("Requested file could not be opened. Are you sure it exists?");
+            break;
+        case 1:
+            printf("A temporary file could not be generated. Are you sure the bank management system has the required authorization to create new files?");
+            break;
+        case 2:
+            printf("Replacement of the old file failed. Are you sure the bank management system has the required authorization to delete files?");
+            break;
+        case 3:
+            printf("Renaming of a file failed. Are you sure the bank management system has the required authorization to rename files?");
+            break;
+    }
+}
+
 void replaceLineInFile(const char* file_name, int line, const char* new_line){
     FILE* file = fopen(file_name, "r");
     if (file == NULL) {
-        printf("Error opening file!\n");
+        troubleShoot(0);
         return;
     }
     char current_string[100];
@@ -14,7 +33,7 @@ void replaceLineInFile(const char* file_name, int line, const char* new_line){
     temp_file_name = "temp.txt";
     FILE* temp_file = fopen(temp_file_name, "w");
     if (temp_file == NULL) {
-        printf("Error creating temp file!\n");
+        troubleShoot(1);
         fclose(file);
         return;
     }
@@ -30,10 +49,10 @@ void replaceLineInFile(const char* file_name, int line, const char* new_line){
     fclose(file);
     fclose(temp_file);
     if(remove(file_name)!=0){
-        printf("could not remove the original file!");
+        troubleShoot(2);
     } // Remove the original file
     if(rename(temp_file_name, file_name)!=0){
-        printf("could not rename!");
+        troubleShoot(3);
     } // Rename the temp file to the original file
 }
 
@@ -68,12 +87,11 @@ bool updateAvailableAccountBalance(int user_id, float newBalance){
             keep_reading = false;
         }
         else if(strstr(buffer, stringID)) { //found the customer
-            fgets(buffer, MAX_LENGTH, file);
-            fgets(buffer, MAX_LENGTH, file);
-            fgets(buffer, MAX_LENGTH, file);
-            fgets(buffer, MAX_LENGTH, file);
+            for (int i = 0; i < 4; i++) {
+                fgets(buffer, MAX_LENGTH, file);
+                currentLine++;
+            }
             strcpy(balance_String, buffer);
-            currentLine+=4;
             keep_reading = false;
         }