diff --git a/modules/backup/mysql-restore-to-sql.sh b/modules/backup/mysql-restore-to-sql.sh
index 0a37fdc..45b3a41 100755
--- a/modules/backup/mysql-restore-to-sql.sh
+++ b/modules/backup/mysql-restore-to-sql.sh
@@ -83,6 +83,12 @@ cleanup_on_exit() {
                 rm -f "$TEMP_DATADIR/socket.mysql" "$TEMP_DATADIR/mysql.lock" 2>/dev/null || true
             fi
 
+            # Clean up PID file if it still exists (BUG FIX: stale PID cleanup)
+            rm -f "$TEMP_DATADIR/mysql.pid" 2>/dev/null || true
+
+            # Clean up error log backups to prevent accumulation (BUG FIX: mysql.err.old cleanup)
+            rm -f "$TEMP_DATADIR/mysql.err.old" 2>/dev/null || true
+
             print_success "Second instance cleaned up"
         fi
     fi
@@ -1281,7 +1287,10 @@ dump_database() {
 
     # Perform dump
     echo ""
-    if mysqldump -h localhost -S "$datadir/socket.mysql" --single-transaction "$dbname" > "$output_file" 2>/dev/null; then
+    # BUG FIX: Capture mysqldump stderr to show errors if dump fails
+    local dump_stderr=$(mktemp)
+    if mysqldump -h localhost -S "$datadir/socket.mysql" --single-transaction "$dbname" > "$output_file" 2>"$dump_stderr"; then
+        rm -f "$dump_stderr"
         # Verify dump completed
         if grep -q "Dump completed on" "$output_file"; then
             local size=$(du -h "$output_file" | awk '{print $1}')
@@ -1305,7 +1314,15 @@ dump_database() {
             return 1
         fi
     else
-        print_error "mysqldump failed"
+        # BUG FIX: Show mysqldump errors instead of silently failing
+        print_error "mysqldump failed with exit code $?"
+        if [ -f "$dump_stderr" ] && [ -s "$dump_stderr" ]; then
+            print_error "Error details:"
+            while IFS= read -r line; do
+                echo "  $line" | sed 's/^[[:space:]]*/  /'
+            done < "$dump_stderr"
+            rm -f "$dump_stderr"
+        fi
         return 1
     fi
 }