diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/AVM2ConstantPool.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/AVM2ConstantPool.java
index 9d8b74c0e..79ca4d1dc 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/AVM2ConstantPool.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/AVM2ConstantPool.java
@@ -122,6 +122,7 @@ public class AVM2ConstantPool implements Cloneable {
 
     public synchronized int addInt(long value) {
         ensureDefault(constant_int);
+        value = (int) value;
         constant_int.add(value);
         return constant_int.size() - 1;
     }
@@ -150,6 +151,7 @@ public class AVM2ConstantPool implements Cloneable {
 
     public synchronized int addUInt(long value) {
         ensureDefault(constant_uint);
+        value &= 0xffffffffl;
         constant_uint.add(value);
         return constant_uint.size() - 1;
     }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/PushByteIns.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/PushByteIns.java
index 36e1dd9ba..37d4be16f 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/PushByteIns.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/PushByteIns.java
@@ -36,13 +36,13 @@ public class PushByteIns extends InstructionDefinition implements PushIntegerTyp
 
     @Override
     public boolean execute(LocalDataArea lda, AVM2ConstantPool constants, AVM2Instruction ins) {
-        lda.operandStack.push(ins.getParam(constants, 0));
+        lda.operandStack.push((long) (byte) ins.operands[0]);
         return true;
     }
 
     @Override
     public void translate(AVM2LocalData localData, TranslateStack stack, AVM2Instruction ins, List<GraphTargetItem> output, String path) {
-        stack.push(new IntegerValueAVM2Item(ins, (long) ins.operands[0]));
+        stack.push(new IntegerValueAVM2Item(ins, (long) (byte) ins.operands[0]));
     }
 
     @Override
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/ecma/EcmaScript.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/ecma/EcmaScript.java
index 8482ecb5a..d8c8b48af 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/ecma/EcmaScript.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/ecma/EcmaScript.java
@@ -48,8 +48,13 @@ public class EcmaScript {
             return (double) (int) (Integer) o;
         }
         if (o instanceof String) {
+            String str = (String) o;
+            if (str.isEmpty()) {
+                return 0.0;
+            }
+
             try {
-                return Double.parseDouble((String) o);
+                return Double.parseDouble(str);
             } catch (NumberFormatException nfe) {
                 return Double.NaN;
             }
diff --git a/test/com/jpexs/decompiler/flash/gui/AS2ExecuteTask.java b/test/com/jpexs/decompiler/flash/gui/AS2ExecuteTask.java
new file mode 100644
index 000000000..c0cff956d
--- /dev/null
+++ b/test/com/jpexs/decompiler/flash/gui/AS2ExecuteTask.java
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (C) 2010-2015 JPEXS
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.jpexs.decompiler.flash.gui;
+
+import com.jpexs.decompiler.flash.action.Action;
+import java.util.List;
+
+/**
+ *
+ * @author JPEXS
+ */
+public class AS2ExecuteTask {
+
+    public String description;
+
+    public List<Action> actions;
+
+    public String flashResult;
+
+    public String ffdecTranslateResult;
+
+    public String ffdecResult;
+}