diff --git a/lib/core/agent.py b/lib/core/agent.py
index 71eb1fc76..f3b417e21 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -172,7 +172,7 @@ class Agent(object):
 
             newValue = "%s%s" % (value, newValue)
 
-        newValue = self.cleanupPayload(newValue, origValue)
+        newValue = self.cleanupPayload(newValue, origValue) or ""
 
         if base64Encoding:
             _newValue = newValue
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 5bf4e8d7d..26023ed5d 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.4.6.7"
+VERSION = "1.4.6.8"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)