diff --git a/source-builder/sb/config.py b/source-builder/sb/config.py
index a082522..e5eb5c0 100644
--- a/source-builder/sb/config.py
+++ b/source-builder/sb/config.py
@@ -29,11 +29,18 @@ import os
 import re
 import sys
 
-import defaults
-import error
-import execute
-import log
-import path
+try:
+    import defaults
+    import error
+    import execute
+    import log
+    import path
+except KeyboardInterrupt:
+    print 'user terminated'
+    sys.exit(1)
+except:
+    print 'unknown application load error'
+    sys.exit(1)
 
 def _check_bool(value):
     if value.isdigit():
diff --git a/source-builder/sb/setbuilder.py b/source-builder/sb/setbuilder.py
index e73eedb..800e09d 100644
--- a/source-builder/sb/setbuilder.py
+++ b/source-builder/sb/setbuilder.py
@@ -28,12 +28,20 @@ import glob
 import operator
 import os
 
-import build
-import check
-import defaults
-import error
-import log
-import path
+try:
+    import build
+    import check
+    import defaults
+    import error
+    import log
+    import path
+    import reports
+except KeyboardInterrupt:
+    print 'user terminated'
+    sys.exit(1)
+except:
+    print 'unknown application load error'
+    sys.exit(1)
 
 #
 # Version of RTEMS Source Builder Set Builder.