diff --git a/tracy/tracy/inc/read_script.h b/tracy/tracy/inc/read_script.h
index 7527655af4ba169f9fcec0cb278721bf37773a5e..5e0478e70f90b0b05f873517c77f38def3e30b3e 100644
--- a/tracy/tracy/inc/read_script.h
+++ b/tracy/tracy/inc/read_script.h
@@ -53,7 +53,8 @@ extern bool MultipoleFlag , ThinsextFlag ;
 extern bool FitTuneFlag ; extern char qf[max_str],qd[max_str]; extern double targetnux, targetnuz;
 extern bool FitTune4Flag  ; extern char qf1[max_str],qf2[max_str],qd1[max_str],qd2[max_str]; 
 extern bool FitChromFlag ; extern char sxm1[max_str],sxm2[max_str]; extern double targetksix, targetksiz ;
-extern bool ChamberFlag , ChamberNoU20Flag , ReadChamberFlag;
+//extern bool ChamberFlag , 
+extern bool ReadChamberFlag;
 extern bool GirderErrorFlag ;
 extern bool SigmaFlag ;
 extern bool PX2Flag;
diff --git a/tracy/tracy/src/read_script.cc b/tracy/tracy/src/read_script.cc
index 01cf12b27a6bf7f37a4a179eea533e8551bf0a88..94a2fa061f236b532518abf802df82117990e857 100644
--- a/tracy/tracy/src/read_script.cc
+++ b/tracy/tracy/src/read_script.cc
@@ -84,7 +84,8 @@ bool FitTuneFlag  = false; char qf[max_str],qd[max_str]; double targetnux = 0.0,
 bool FitTune4Flag  = false; char qf1[max_str],qf2[max_str],qd1[max_str],qd2[max_str];
 
 bool FitChromFlag = false; char sxm1[max_str],sxm2[max_str]; double targetksix = 0.0, targetksiz = 0.0;
-bool ChamberFlag = false, ChamberNoU20Flag = false, ReadChamberFlag = false;
+//bool ChamberFlag = false, 
+bool ReadChamberFlag = false;
 bool GirderErrorFlag = false;
 bool SigmaFlag = false;
 bool PX2Flag = false;
@@ -132,7 +133,9 @@ void read_script(const char *param_file_name, bool rd_lat)
       
       LineNum++;
     
-    if (strstr(line, "#") == NULL && strcmp(line,"\n") != 0) {
+    /* read the end of line symbol '\n','\r' or '\r\n' at different operation system*/
+    if (strstr(line, "#") == NULL && strcmp(line,"\n") != 0 &&
+        strcmp(line,"\r") != 0 && strcmp(line,"\r\n") != 0) {
       // get initial command token
       sscanf(line, "%s", name);
       
@@ -172,12 +175,9 @@ void read_script(const char *param_file_name, bool rd_lat)
       } 
       
       /* read in bool flags */
-      else if (strcmp("ChamberFlag", name) == 0){
-	 ChamberFlag = true;
-     }
-      else if (strcmp("ChamberNoU20Flag", name) == 0){
-         ChamberNoU20Flag = true;
-     }
+   //   else if (strcmp("ChamberFlag", name) == 0){
+   //	 ChamberFlag = true;
+   //  }
      else if (strcmp("ReadChamberFlag", name) == 0){
          ReadChamberFlag = true;
      }