diff --git a/source/common/scripting/backend/codegen.cpp b/source/common/scripting/backend/codegen.cpp
index 1c9209c58..0ec83f20a 100644
--- a/source/common/scripting/backend/codegen.cpp
+++ b/source/common/scripting/backend/codegen.cpp
@@ -4282,13 +4282,13 @@ FxExpression *FxBinaryLogical::Resolve(FCompileContext& ctx)
 	{
 		if (b_left==0 || b_right==0)
 		{
-			FxExpression *x = new FxConstant(true, ScriptPosition);
+			FxExpression *x = new FxConstant(false, ScriptPosition);
 			delete this;
 			return x;
 		}
 		else if (b_left==1 && b_right==1)
 		{
-			FxExpression *x = new FxConstant(false, ScriptPosition);
+			FxExpression *x = new FxConstant(true, ScriptPosition);
 			delete this;
 			return x;
 		}
diff --git a/source/common/scripting/core/dynarrays.cpp b/source/common/scripting/core/dynarrays.cpp
index 16bb57ca8..eebb97da8 100644
--- a/source/common/scripting/core/dynarrays.cpp
+++ b/source/common/scripting/core/dynarrays.cpp
@@ -121,6 +121,17 @@ template<class T> unsigned int ArrayReserve(T *self, int amount)
 	return self->Reserve(amount);
 }
 
+template<> unsigned int ArrayReserve(TArray<DObject*> *self, int amount)
+{
+	const unsigned int oldSize = self->Reserve(amount);
+	const unsigned int fillCount = self->Size() - oldSize;
+
+	if (fillCount > 0)
+		memset(&(*self)[oldSize], 0, sizeof(DObject*) * fillCount);
+	
+	return oldSize;
+}
+
 template<class T> int ArrayMax(T *self)
 {
 	return self->Max();
@@ -908,7 +919,7 @@ DEFINE_ACTION_FUNCTION_NATIVE(FDynArray_Obj, Reserve, ArrayReserve<FDynArray_Obj
 {
 	PARAM_SELF_STRUCT_PROLOGUE(FDynArray_Obj);
 	PARAM_INT(count);
-	ACTION_RETURN_INT(self->Reserve(count));
+	ACTION_RETURN_INT(ArrayReserve(self, count));
 }
 
 DEFINE_ACTION_FUNCTION_NATIVE(FDynArray_Obj, Max, ArrayMax<FDynArray_Obj>)
diff --git a/source/common/scripting/core/types.h b/source/common/scripting/core/types.h
index b35047525..0d6c6546e 100644
--- a/source/common/scripting/core/types.h
+++ b/source/common/scripting/core/types.h
@@ -101,6 +101,7 @@ public:
 	VersionInfo		mVersion = { 0,0,0 };
 	uint8_t loadOp, storeOp, moveOp, RegType, RegCount;
 	EScopeFlags ScopeFlags = (EScopeFlags)0;
+	bool            SizeKnown = true;
 
 	PType(unsigned int size = 1, unsigned int align = 1);
 	virtual ~PType();
diff --git a/source/common/scripting/frontend/ast.cpp b/source/common/scripting/frontend/ast.cpp
index ae198dc84..cb29457e4 100644
--- a/source/common/scripting/frontend/ast.cpp
+++ b/source/common/scripting/frontend/ast.cpp
@@ -913,6 +913,25 @@ static void PrintPropertyStmt(FLispString &out, ZCC_TreeNode *node)
 	out.Close();
 }
 
+static void PrintMixinDef(FLispString &out, ZCC_TreeNode *node)
+{
+	ZCC_MixinDef *mdnode = (ZCC_MixinDef *)node;
+	out.Break();
+	out.Open("mixin-def");
+	out.AddName(mdnode->NodeName);
+	PrintNodes(out, mdnode->Body);
+	out.Close();
+}
+
+static void PrintMixinStmt(FLispString &out, ZCC_TreeNode *node)
+{
+	ZCC_MixinStmt *msnode = (ZCC_MixinStmt *)node;
+	out.Break();
+	out.Open("mixin-stmt");
+	out.AddName(msnode->MixinName);
+	out.Close();
+}
+
 void (* const TreeNodePrinter[NUM_AST_NODE_TYPES])(FLispString &, ZCC_TreeNode *) =
 {
 	PrintIdentifier,
@@ -972,6 +991,8 @@ void (* const TreeNodePrinter[NUM_AST_NODE_TYPES])(FLispString &, ZCC_TreeNode *
 	PrintStaticArrayState,
 	PrintProperty,
 	PrintFlagDef,
+	PrintMixinDef,
+	PrintMixinStmt,
 };
 
 FString ZCC_PrintAST(ZCC_TreeNode *root)
diff --git a/source/common/scripting/frontend/zcc_compile.cpp b/source/common/scripting/frontend/zcc_compile.cpp
index 5c73fc1cc..0bc337bde 100644
--- a/source/common/scripting/frontend/zcc_compile.cpp
+++ b/source/common/scripting/frontend/zcc_compile.cpp
@@ -1476,8 +1476,12 @@ bool ZCCCompiler::CompileFields(PContainerType *type, TArray<ZCC_VarDeclarator *
 		auto name = field->Names;
 		do
 		{
-			if (fieldtype->Size == 0 && !(varflags & VARF_Native))	// Size not known yet.
+			if ((fieldtype->Size == 0 || !fieldtype->SizeKnown) && !(varflags & VARF_Native))	// Size not known yet.
 			{
+				if (type != nullptr)
+				{
+					type->SizeKnown = false;
+				}
 				return false;
 			}
 
@@ -1532,6 +1536,10 @@ bool ZCCCompiler::CompileFields(PContainerType *type, TArray<ZCC_VarDeclarator *
 
 							if (OutNamespace->Symbols.AddSymbol(f) == nullptr)
 							{ // name is already in use
+								if (type != nullptr)
+								{
+									type->SizeKnown = false;
+								}
 								f->Destroy();
 								return false;
 							}
@@ -1565,6 +1573,12 @@ bool ZCCCompiler::CompileFields(PContainerType *type, TArray<ZCC_VarDeclarator *
 		} while (name != field->Names);
 		Fields.Delete(0);
 	}
+
+	if (type != nullptr)
+	{
+		type->SizeKnown = Fields.Size() == 0;
+	}
+
 	return Fields.Size() == 0;
 }
 
diff --git a/source/common/scripting/jit/jit.cpp b/source/common/scripting/jit/jit.cpp
index 18ccb9246..6d141e652 100644
--- a/source/common/scripting/jit/jit.cpp
+++ b/source/common/scripting/jit/jit.cpp
@@ -390,7 +390,7 @@ static void PopFullVMFrame(VMFrameStack *stack)
 
 void JitCompiler::EmitPopFrame()
 {
-	if (sfunc->SpecialInits.Size() != 0 || sfunc->NumRegS != 0)
+	if (sfunc->SpecialInits.Size() != 0 || sfunc->NumRegS != 0 || sfunc->ExtraSpace != 0)
 	{
 		auto popFrame = CreateCall<void, VMFrameStack *>(PopFullVMFrame);
 		popFrame->setArg(0, stack);
diff --git a/source/common/scripting/jit/jit_flow.cpp b/source/common/scripting/jit/jit_flow.cpp
index 5db91818a..8439481cf 100644
--- a/source/common/scripting/jit/jit_flow.cpp
+++ b/source/common/scripting/jit/jit_flow.cpp
@@ -310,7 +310,7 @@ void JitCompiler::ThrowArrayOutOfBounds(int index, int size)
 {
 	if (index >= size)
 	{
-		ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Max.index = %u, current index = %u\n", size, index);
+		ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Size = %u, current index = %u\n", size, index);
 	}
 	else
 	{
diff --git a/source/common/scripting/vm/vmexec.h b/source/common/scripting/vm/vmexec.h
index 154cac29e..76e7596e7 100644
--- a/source/common/scripting/vm/vmexec.h
+++ b/source/common/scripting/vm/vmexec.h
@@ -806,7 +806,7 @@ static int ExecScriptFunc(VMFrameStack *stack, VMReturn *ret, int numret)
 	OP(BOUND):
 		if (reg.d[a] >= BC)
 		{
-			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Max.index = %u, current index = %u\n", BC, reg.d[a]);
+			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Size = %u, current index = %u\n", BC, reg.d[a]);
 			return 0;
 		}
 		else if (reg.d[a] < 0)
@@ -820,7 +820,7 @@ static int ExecScriptFunc(VMFrameStack *stack, VMReturn *ret, int numret)
 		ASSERTKD(BC);
 		if (reg.d[a] >= konstd[BC])
 		{
-			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Max.index = %u, current index = %u\n", konstd[BC], reg.d[a]);
+			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Size = %u, current index = %u\n", konstd[BC], reg.d[a]);
 			return 0;
 		}
 		else if (reg.d[a] < 0)
@@ -834,7 +834,7 @@ static int ExecScriptFunc(VMFrameStack *stack, VMReturn *ret, int numret)
 		ASSERTD(B);
 		if (reg.d[a] >= reg.d[B])
 		{
-			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Max.index = %u, current index = %u\n", reg.d[B], reg.d[a]);
+			ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Size = %u, current index = %u\n", reg.d[B], reg.d[a]);
 			return 0;
 		}
 		else if (reg.d[a] < 0)
diff --git a/source/common/scripting/vm/vmframe.cpp b/source/common/scripting/vm/vmframe.cpp
index 7c2a63b1f..ff193320f 100644
--- a/source/common/scripting/vm/vmframe.cpp
+++ b/source/common/scripting/vm/vmframe.cpp
@@ -45,7 +45,11 @@
 #include "version.h"
 
 #ifdef HAVE_VM_JIT
+#ifdef __DragonFly__
+CUSTOM_CVAR(Bool, vm_jit, false, CVAR_NOINITCALL)
+#else
 CUSTOM_CVAR(Bool, vm_jit, true, CVAR_NOINITCALL)
+#endif
 {
 	Printf("You must restart " GAMENAME " for this change to take effect.\n");
 	Printf("This cvar is currently not saved. You must specify it on the command line.");