diff --git a/components/iscesys/ImageApi/DataAccessor/bindings/DataAccessormodule.cpp b/components/iscesys/ImageApi/DataAccessor/bindings/DataAccessormodule.cpp
index 2f34c76..6a0a114 100644
--- a/components/iscesys/ImageApi/DataAccessor/bindings/DataAccessormodule.cpp
+++ b/components/iscesys/ImageApi/DataAccessor/bindings/DataAccessormodule.cpp
@@ -136,8 +136,17 @@ createAccessor_C(PyObject* self, PyObject* args)
   }
   if (casterCh[0] == '\0')
   {
-    ptDataAccessor = (uint64_t) AF->createAccessor(filename, filemode, size,
-        bands, width, scheme);
+    try
+    {
+      ptDataAccessor = (uint64_t) AF->createAccessor(filename, filemode, size,
+          bands, width, scheme);
+    }
+    catch(const std::exception& e)
+    {
+      PyErr_SetString(PyExc_OSError, e.what());
+      return NULL;
+    }
+
   }
   else if (casterCh[0] != '\0' && PyDict_Size(dict) == 0)
   {
diff --git a/components/iscesys/ImageApi/InterleavedAccessor/include/InterleavedBase.h b/components/iscesys/ImageApi/InterleavedAccessor/include/InterleavedBase.h
index bba0790..fc66f59 100644
--- a/components/iscesys/ImageApi/InterleavedAccessor/include/InterleavedBase.h
+++ b/components/iscesys/ImageApi/InterleavedAccessor/include/InterleavedBase.h
@@ -10,6 +10,7 @@
 
 #include <stdlib.h>
 #include <string>
+#include <stdexcept>
 
 
 using namespace std;
diff --git a/components/iscesys/ImageApi/InterleavedAccessor/src/GDALAccessor.cpp b/components/iscesys/ImageApi/InterleavedAccessor/src/GDALAccessor.cpp
index 4cb0a4c..2ae9c3c 100644
--- a/components/iscesys/ImageApi/InterleavedAccessor/src/GDALAccessor.cpp
+++ b/components/iscesys/ImageApi/InterleavedAccessor/src/GDALAccessor.cpp
@@ -69,21 +69,21 @@ GDALAccessor::openFile (string filename, string accessMode, GDALDataset ** fd)
     if (accessMode == "read" || accessMode == "READ")
     {
         std::cout << "GDAL open (R): " << filename << std::endl;
-	(*fd) = (GDALDataset *) GDALOpenShared (filename.c_str (), GA_ReadOnly);
-	if ((*fd) == NULL)
-	{
-	    cout << "Error. Cannot open the file " << filename << " in "
-		    << accessMode << " mode." << endl;
-	    ERR_MESSAGE
-	    ;
-	}
+        (*fd) = (GDALDataset *) GDALOpenShared (filename.c_str (), GA_ReadOnly);
+        if ((*fd) == NULL)
+        {
+            string errMsg = "Cannot open the file " + filename + " in "
+                            + accessMode + " mode.";
+            throw runtime_error(errMsg);
+            // ERR_MESSAGE;
+        }
     }
     else
     {
-	cout << "Error. Only read mode is available and not " << accessMode
-		<< " mode." << endl;
-	ERR_MESSAGE
-	;
+        string errMsg = "Error. Only read mode is available and not " + accessMode + " mode.";
+        throw runtime_error(errMsg);
+        // ERR_MESSAGE
+        // ;
     }
 
 }
diff --git a/components/iscesys/ImageApi/InterleavedAccessor/src/InterleavedAccessor.cpp b/components/iscesys/ImageApi/InterleavedAccessor/src/InterleavedAccessor.cpp
index 5951606..498dae0 100644
--- a/components/iscesys/ImageApi/InterleavedAccessor/src/InterleavedAccessor.cpp
+++ b/components/iscesys/ImageApi/InterleavedAccessor/src/InterleavedAccessor.cpp
@@ -112,8 +112,8 @@ void  InterleavedAccessor::openFile(string filename, string accessMode, fstream
         fd.open(filename.c_str(), ios_base::in);
         if(fd.fail())
         {
-            cout << "Error. Cannot open the file " << filename << " in " << accessMode << " mode." <<endl;
-            ERR_MESSAGE;
+            string errMsg = "Cannot open the file " + filename + " in " + accessMode + " mode.";
+            throw runtime_error(errMsg);
         }
 
     }
@@ -139,13 +139,13 @@ void  InterleavedAccessor::openFile(string filename, string accessMode, fstream
     }
     else
     {
-        cout << "Error. Unrecognized open mode " << accessMode << " for file " << filename << endl;
-        ERR_MESSAGE;
+        string errMsg = "Unrecognized open mode " + accessMode + " for file " + filename;
+        throw runtime_error(errMsg);
     }
     if(!fd.good())
     {
-        cout << "Cannot open file " << filename << endl;
-        ERR_MESSAGE;
+        string errMsg = "Cannot open file " + filename;
+        throw runtime_error(errMsg);
     }
 }
 void InterleavedAccessor::getStream(char * dataLine,  int  & numEl)