diff --git a/neth/main.cpp b/neth/main.cpp
index 4c38da0a4..31df2ffcb 100644
--- a/neth/main.cpp
+++ b/neth/main.cpp
@@ -626,6 +626,7 @@ int main(int argc, char** argv)
 
 	logwin = newwin(height * 2 / 5 - 2, width * 2 / 3, qheight, 0);
 	nc::nc_window_streambuf outbuf(logwin, std::cout);
+	nc::nc_window_streambuf eoutbuf(logwin, std::cerr);
 
 	consolewin   = newwin(qheight, width / 4, 0, 0);
 	nc::nc_window_streambuf coutbuf(consolewin, ccout);
diff --git a/solc/docker_emscripten/Dockerfile b/solc/docker_emscripten/Dockerfile
index 06467a2c5..1ad1875d7 100644
--- a/solc/docker_emscripten/Dockerfile
+++ b/solc/docker_emscripten/Dockerfile
@@ -43,7 +43,14 @@ RUN sed -i 's/$(archiver\[1\])/\/home\/user\/emsdk_portable\/emscripten\/master\
 RUN sed -i 's/$(ranlib\[1\])/\/home\/user\/emsdk_portable\/emscripten\/master\/emranlib/g' ./tools/build/src/tools/gcc.jam
 RUN ./b2 link=static variant=release threading=single runtime-link=static thread system regex
 
-# Build soljs
+# Json-CPP
+WORKDIR /home/user
+RUN git clone https://github.com/open-source-parsers/jsoncpp.git
+WORKDIR /home/user/jsoncpp
+RUN emcmake cmake -DJSONCPP_LIB_BUILD_STATIC=ON -DJSONCPP_LIB_BUILD_SHARED=OFF -DJSONCPP_WITH_TESTS=OFF -DJSONCPP_WITH_POST_BUILD_UNITTEST=OFF -G "Unix Makefiles" .
+RUN emmake make
+
+## Build soljs
 WORKDIR /home/user
 ADD https://api.github.com/repos/ethereum/cpp-ethereum/git/refs/heads/develop unused.txt
 RUN git clone --depth=1 https://github.com/ethereum/cpp-ethereum
@@ -55,8 +62,10 @@ RUN git remote add -f solidityjs https://github.com/chriseth/cpp-ethereum
 # TODO this should be a proper merge but somehow causes problems
 # NOTE that we only get the latest commit of that branch
 RUN git cherry-pick solidityjs/solidity-js
-RUN emcmake cmake -DETH_STATIC=1 -DONLY_SOLIDITY=1 -DHEADLESS=1 -DCMAKE_CXX_COMPILER=/home/user/emsdk_portable/emscripten/master/em++ -DCMAKE_C_COMPILER=/home/user/emsdk_portable/emscripten/master/emcc
+RUN emcmake cmake -DETH_STATIC=1 -DSOLIDITY=ON -DGUI=0 -DCMAKE_CXX_COMPILER=/home/user/emsdk_portable/emscripten/master/em++ -DCMAKE_C_COMPILER=/home/user/emsdk_portable/emscripten/master/emcc
 RUN emmake make -j 6 soljs
 
-ENTRYPOINT cat soljs/soljs.js
+WORKDIR /home/user/cpp-ethereum/soljs
+# somehow it does not work to pipe out both files
+#ENTRYPOINT tar -c soljs.js soljs.js.mem | base64
 
diff --git a/test/TestHelper.cpp b/test/TestHelper.cpp
index 92a8258ac..ed844e961 100644
--- a/test/TestHelper.cpp
+++ b/test/TestHelper.cpp
@@ -123,7 +123,7 @@ json_spirit::mObject& ImportTest::makeAllFieldsHex(json_spirit::mObject& _o)
 {
 	static const set<string> hashes {"bloom" , "coinbase", "hash", "mixHash", "parentHash", "receiptTrie",
 									 "stateRoot", "transactionsTrie", "uncleHash", "currentCoinbase",
-									 "previousHash", "to", "address", "caller", "origin", "secretKey"};
+									 "previousHash", "to", "address", "caller", "origin", "secretKey", "data"};
 
 	for (auto& i: _o)
 	{
@@ -140,7 +140,7 @@ json_spirit::mObject& ImportTest::makeAllFieldsHex(json_spirit::mObject& _o)
 			str = value.get_str();
 		else continue;
 
-		_o[key] = (str.substr(0, 2) == "0x") ? str : "0x" + toHex(toCompactBigEndian(toInt(str)));
+		_o[key] = (str.substr(0, 2) == "0x") ? str : "0x" + toHex(toCompactBigEndian(toInt(str), 1));
 	}
 	return _o;
 }
@@ -363,8 +363,8 @@ json_spirit::mObject fillJsonWithState(State _state)
 	for (auto const& a: _state.addresses())
 	{
 		json_spirit::mObject o;
-		o["balance"] = "0x" + toHex(toCompactBigEndian(_state.balance(a.first)));
-		o["nonce"] = "0x" + toHex(toCompactBigEndian(_state.transactionsFrom(a.first)));
+		o["balance"] = "0x" + toHex(toCompactBigEndian(_state.balance(a.first), 1));
+		o["nonce"] = "0x" + toHex(toCompactBigEndian(_state.transactionsFrom(a.first), 1));
 		{
 			json_spirit::mObject store;
 			for (auto const& s: _state.storage(a.first))
diff --git a/test/blockchain.cpp b/test/blockchain.cpp
index b144abe62..ec8fb7539 100644
--- a/test/blockchain.cpp
+++ b/test/blockchain.cpp
@@ -625,11 +625,11 @@ void writeBlockHeaderToJson(mObject& _o, BlockInfo const& _bi)
 	_o["transactionsTrie"] = toString(_bi.transactionsRoot);
 	_o["receiptTrie"] = toString(_bi.receiptsRoot);
 	_o["bloom"] = toString(_bi.logBloom);
-	_o["difficulty"] = "0x" + toHex(toCompactBigEndian(_bi.difficulty));
-	_o["number"] = "0x" + toHex(toCompactBigEndian(_bi.number));
-	_o["gasLimit"] = "0x" + toHex(toCompactBigEndian(_bi.gasLimit));
-	_o["gasUsed"] = "0x" + toHex(toCompactBigEndian(_bi.gasUsed));
-	_o["timestamp"] = "0x" + toHex(toCompactBigEndian(_bi.timestamp));
+	_o["difficulty"] = "0x" + toHex(toCompactBigEndian(_bi.difficulty), 1);
+	_o["number"] = "0x" + toHex(toCompactBigEndian(_bi.number), 1);
+	_o["gasLimit"] = "0x" + toHex(toCompactBigEndian(_bi.gasLimit), 1);
+	_o["gasUsed"] = "0x" + toHex(toCompactBigEndian(_bi.gasUsed), 1);
+	_o["timestamp"] = "0x" + toHex(toCompactBigEndian(_bi.timestamp), 1);
 	_o["extraData"] ="0x" + toHex(_bi.extraData);
 	_o["mixHash"] = toString(_bi.mixHash);
 	_o["nonce"] = toString(_bi.nonce);