Index: src/ch/UpdateVersionInfo.cpp
===================================================================
diff -u -N -r4572f6cddf7dab06b1de99504a6bbd3680d11e6d -r71c49ab6ac2e657dee997cb9129c7d0d4dde21b6
--- src/ch/UpdateVersionInfo.cpp	(.../UpdateVersionInfo.cpp)	(revision 4572f6cddf7dab06b1de99504a6bbd3680d11e6d)
+++ src/ch/UpdateVersionInfo.cpp	(.../UpdateVersionInfo.cpp)	(revision 71c49ab6ac2e657dee997cb9129c7d0d4dde21b6)
@@ -21,8 +21,9 @@
 #include <boost\algorithm\string\split.hpp>
 #include <boost/algorithm/string/classification.hpp>
 #include <boost\lexical_cast.hpp>
+#include <boost/date_time/gregorian/greg_date.hpp>
 
-UpdateVersionInfo::UpdateVersionInfo(std::wstring strNumericVersion, std::wstring strReadableVersion, boost::gregorian::date dateRelease, std::wstring strDownloadLink, std::wstring strReleaseNotes) :
+UpdateVersionInfo::UpdateVersionInfo(const std::wstring& strNumericVersion, const std::wstring& strReadableVersion, boost::gregorian::date dateRelease, const std::wstring& strDownloadLink, const std::wstring& strReleaseNotes) :
 	m_strNumericVersion(strNumericVersion),
 	m_strReadableVersion(strReadableVersion),
 	m_dateRelease(dateRelease),