diff -r e718b56aba78 -r f875ce723f2c src/BytecodeCompiler.cpp
--- a/src/BytecodeCompiler.cpp	Sat Sep 01 16:36:20 2012 -0700
+++ b/src/BytecodeCompiler.cpp	Sat Sep 01 17:10:56 2012 -0700
@@ -228,10 +228,13 @@
             // += etc is not allowed on arrays.
             assert(!var->type()->isArray());
 
+            if (var->location() == Variable::ENVIRONMENT)
+                getEnvSlot(var);
+
             if (var->type()->isReference()) {
                 __ dup();
                 __ getref(var->type()->contained());
-            } else {
+            } else if (var->location() != Variable::ENVIRONMENT) {
                 __ get(var);
             }
         }
@@ -287,6 +290,8 @@
 
         if (var->type()->isReference())
             __ setref(var->type()->contained());
+        else if (var->location() == Variable::ENVIRONMENT)
+            setEnvSlot(var);
         else
             __ set(var);
     } else if (node->lvalue()->isFieldExpression()) {