--- src/crypto51/cryptlib.h.old	2011-04-12 14:50:28.000000000 +0200
+++ src/crypto51/cryptlib.h	2011-04-12 14:55:34.000000000 +0200
@@ -297,6 +297,7 @@
 class NullNameValuePairs : public NameValuePairs
 {
 public:
+	NullNameValuePairs() : NameValuePairs() {}
 	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const {return false;}
 };