Quick fix.

CMakeLists.txt

@@ -122,9 +122,8 @@ if(${TARGET_PLATFORM} STREQUAL "w64")
 else()
 	# Look for available Crypto++ version and if it is >= 5.6.2
 	find_path(CRYPTOPP_ID cryptlib.h
-		../Xcryptopp/src
-		../../Xcryptopp/src)
-	message(${CRYPTOPP_ID})
+		../cryptopp/src
+		../../cryptopp/src)
 	if(NOT ${CRYPTOPP_ID} STREQUAL "CRYPTOPP_ID-NOTFOUND")
 		message("Local cryptopp OK.")
 		set(CRYPTOPP_LS ${CRYPTOPP_ID}/../target/build/release/libcryptopp.so)

alethzero/MainWin.cpp

@@ -1216,16 +1216,18 @@ void Main::on_debug_clicked()
 			t.sign(s);
 			auto r = t.rlp();
 
-			m_currentExecution->setup(&r);
+			bool ok = m_currentExecution->setup(&r);
 			m_pcWarp.clear();
 			m_history.clear();
-			bool ok = true;
+			if (ok)
+			{
 				auto gasBegin = m_currentExecution->vm().gas();
 				while (ok)
 				{
 					m_history.append(WorldState({m_currentExecution->vm().curPC(), m_currentExecution->vm().gas(), gasBegin - m_currentExecution->vm().gas(), m_currentExecution->vm().stack(), m_currentExecution->vm().memory(), m_currentExecution->state().storage(m_currentExecution->ext().myAddress)}));
 					ok = !m_currentExecution->go(1);
 				}
+			}
 			initDebugger();
 			m_currentExecution.reset();
 			updateDebugger();