diff --git a/lib/block/block.js b/lib/block/block.js
index 487c2d3..eb3246e 100644
--- a/lib/block/block.js
+++ b/lib/block/block.js
@@ -69,7 +69,6 @@ Block._fromJSON = function _fromJSON(data) {
 Block._fromObject = function _fromObject(data) {
   var transactions = [];
   data.transactions.forEach(function(tx) {
-    console.log(tx.id);
     transactions.push(Transaction().fromJSON(tx));
   });
   var info = {
diff --git a/lib/script/script.js b/lib/script/script.js
index 04db398..4c050a3 100644
--- a/lib/script/script.js
+++ b/lib/script/script.js
@@ -93,13 +93,17 @@ Script.fromBuffer = function(buffer) {
           opcodenum: opcodenum
         });
       } else {
+        var op = Opcode.reverseMap[opcodenum];
+        if (!op) {
+          throw new errors.Script.InvalidBuffer(buffer.toString('hex'));
+        }
         script.chunks.push({
           opcodenum: opcodenum
         });
       }
     } catch (e) {
       if (e instanceof RangeError) {
-        throw new errors.Script.InvalidBuffer(buffer);
+        throw new errors.Script.InvalidBuffer(buffer.toString('hex'));
       }
       throw e;
     }
diff --git a/lib/transaction/input/input.js b/lib/transaction/input/input.js
index 223954f..260c561 100644
--- a/lib/transaction/input/input.js
+++ b/lib/transaction/input/input.js
@@ -30,6 +30,9 @@ Object.defineProperty(Input.prototype, 'script', {
   writeable: false,
   enumerable: true,
   get: function() {
+    if (this.isNull()) {
+      return null;
+    }
     if (!this._script) {
       this._script = new Script(this._scriptBuffer);
     }
@@ -59,8 +62,12 @@ Input.prototype.toObject = function toObject() {
     prevTxId: this.prevTxId.toString('hex'),
     outputIndex: this.outputIndex,
     sequenceNumber: this.sequenceNumber,
-    script: this.script.toString(),
+    script: this._scriptBuffer.toString('hex'),
   };
+  // add human readable form if input contains valid script
+  if (this.script) {
+    obj.scriptString = this.script.toString();
+  }
   if (this.output) {
     obj.output = this.output.toObject();
   }
@@ -88,6 +95,8 @@ Input.fromBufferReader = function(br) {
   input.outputIndex = br.readUInt32LE();
   input._scriptBuffer = br.readVarLengthBuffer();
   input.sequenceNumber = br.readUInt32LE();
+  // TODO: return different classes according to which input it is
+  // e.g: CoinbaseInput, PublicKeyHashInput, MultiSigScriptHashInput, etc.
   return input;
 };
 
@@ -105,14 +114,18 @@ Input.prototype.toBufferWriter = function(writer) {
 };
 
 Input.prototype.setScript = function(script) {
+  this._script = null;
   if (script instanceof Script) {
     this._script = script;
     this._scriptBuffer = script.toBuffer();
+  } else if (JSUtil.isHexa(script)) {
+    // hex string script
+    this._scriptBuffer = new Buffer(script, 'hex');
   } else if (_.isString(script)) {
-    this._script = new Script(script);
-    this._scriptBuffer = this._script.toBuffer();
+    // human readable string script
+    this._scriptBuffer = script.toBuffer();
   } else if (BufferUtil.isBuffer(script)) {
-    this._script = null;
+    // buffer script
     this._scriptBuffer = new buffer.Buffer(script);
   } else {
     throw new TypeError('Invalid argument type: script');
diff --git a/test/block.js b/test/block.js
index 56cbad2..d55152b 100644
--- a/test/block.js
+++ b/test/block.js
@@ -188,7 +188,7 @@ describe('Block', function() {
             prevTxId: '0000000000000000000000000000000000000000000000000000000000000000',
             outputIndex: 4294967295,
             sequenceNumber: 4294967295,
-            script: '4 0xffff001d 1 0x04'
+            script: '04ffff001d0104'
           }],
           outputs: [{
             satoshis: 5000000000,
diff --git a/test/script/script.js b/test/script/script.js
index b3533f1..6ac9612 100644
--- a/test/script/script.js
+++ b/test/script/script.js
@@ -754,13 +754,17 @@ describe('Script', function() {
       Script().add(new Buffer('a')).equals(Script().add(new Buffer('b'))).should.equal(false);
     });
   });
-  describe.only('coinbase transaction input script', function() {
-    it('works for bug found in bitcore-node', function() {
-      var hex = '03984b05e4b883e5bda9e7a59ee4bb99e9b1bcfabe6d6d5cb348c1c7d580627835202f5ad93c2f3db10bb850a1a513979f8328d9f35aff1000000000000000006189dd01cf00004d696e6564206279207975313333353131373131';
-      var s = new Script(hex);
-      var s2 = new Script(s.toString());
-      console.log(s2.toString());
-      s2.toString().should.equal(s.toString());
+  describe('coinbase transaction input script for tx ', function() {
+    it('fails for that specific malformed script', function() {
+      var hex = '03984b05' + // push 0x03 bytes with block height
+        'e4' + // attempt to push 0xe4 bytes, but should use OP_PUSHDATA 0xe4
+        'b883e5bda9e7a59ee4bb99e9b1bcfabe6d6d5cb348c1c7d58062783520' +
+        '2f5ad93c2f3db10bb850a1a513979f8328d9f35aff1000000000000000' +
+        '006189dd01cf00004d696e6564206279207975313333353131373131';
+      var fails = function() {
+        return new Script(hex);
+      };
+      fails.should.throw('Invalid script buffer: can\'t parse valid script from given buffer');
     });
   });