diff --git a/schainpy/VERSION b/schainpy/VERSION
index c2efc09..ab70055 100644
--- a/schainpy/VERSION
+++ b/schainpy/VERSION
@@ -70,4 +70,5 @@ properly but the next days did not.
 
 2.2.4:
 -jroproc_spectra_lags.py added to schainpy
--Bug fixed in schainGUI: project created the same procUnit in some cases.
+-Bug fixed in schainGUI: ProcUnit was created with the same id in some cases.
+-Bug fixed in jroHeaderIO: Header size validation.
diff --git a/schainpy/__init__.py b/schainpy/__init__.py
index 01d295a..2d51a72 100644
--- a/schainpy/__init__.py
+++ b/schainpy/__init__.py
@@ -4,4 +4,4 @@ Created on Feb 7, 2012
 @author $Author$
 @version $Id$
 '''
-__version__ = "2.2.3.3"
\ No newline at end of file
+__version__ = "2.2.4"
\ No newline at end of file
diff --git a/schainpy/model/data/jroheaderIO.py b/schainpy/model/data/jroheaderIO.py
index 06f54cc..c03853d 100644
--- a/schainpy/model/data/jroheaderIO.py
+++ b/schainpy/model/data/jroheaderIO.py
@@ -149,6 +149,9 @@ class BasicHeader(Header):
         self.timeZone = int(header['nTimezone'][0])
         self.dstFlag = int(header['nDstflag'][0])
         self.errorCount = int(header['nErrorCount'][0])
+        
+        if self.size < 24:
+            return 0
             
         return 1
     
@@ -213,12 +216,13 @@ class SystemHeader(Header):
         endFp = self.size + startFp
         
         if fp.tell() > endFp:
-            sys.stderr.write("Warning: System header size is lower than it has to be")
+            sys.stderr.write("Warning %s: Size value read from System Header is lower than it has to be\n" %fp.name)
             return 0
             
         if fp.tell() < endFp:
-            sys.stderr.write("Warning: System header size is greater than it is considered")
-            
+            sys.stderr.write("Warning %s: Size value read from System Header size is greater than it has to be\n" %fp.name)
+            return 0
+        
         return 1
     
     def write(self, fp):
@@ -356,15 +360,15 @@ class RadarControllerHeader(Header):
         
         if fp.tell() != endFp:
 #             fp.seek(endFp)
-            print "Radar Controller Header is not consistent read[%d] != header[%d]" %(fp.tell()-startFp,endFp)
+            print "%s: Radar Controller Header size is not consistent: from data [%d] != from header field [%d]" %(fp.name, fp.tell()-startFp, size)
 #             return 0
 
         if fp.tell() > endFp:
-            sys.stderr.write("Warning: Radar Controller header size is lower than it has to be")
+            sys.stderr.write("Warning %s: Size value read from Radar Controller header is lower than it has to be\n" %fp.name)
 #             return 0
             
         if fp.tell() < endFp:
-            sys.stderr.write("Warning: Radar Controller header size is greater than it is considered")
+            sys.stderr.write("Warning %s: Size value read from Radar Controller header is greater than it has to be\n" %fp.name)
             
             
         return 1
diff --git a/schainpy/model/io/jroIO_base.py b/schainpy/model/io/jroIO_base.py
index 28ff38d..ac89eec 100644
--- a/schainpy/model/io/jroIO_base.py
+++ b/schainpy/model/io/jroIO_base.py
@@ -141,9 +141,14 @@ def isFileInTimeRange(filename, startDate, endDate, startTime, endTime):
         print "[Reading] Skipping the file %s because it has not a valid header" %(filename)
         return None
     
-    sts = systemHeaderObj.read(fp)
-    sts = radarControllerHeaderObj.read(fp)
-    sts = processingHeaderObj.read(fp)
+    if not systemHeaderObj.read(fp):
+        return None
+    
+    if not radarControllerHeaderObj.read(fp):
+        return None
+    
+    if not processingHeaderObj.read(fp):
+        return None
     
     filesize = os.path.getsize(filename)