diff -r 0ede7ca157e2 -r 8aee27d46208 stage4/generate_c/generate_c_il.cc
--- a/stage4/generate_c/generate_c_il.cc	Fri Dec 26 09:39:18 2014 +0000
+++ b/stage4/generate_c/generate_c_il.cc	Fri Dec 26 09:57:02 2014 +0000
@@ -1067,9 +1067,9 @@
   if (function_block_type_name == NULL) ERROR;
 
   /* Now find the declaration of the function block type being called... */
-  function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(function_block_type_name);
-    /* should never occur. The function block type being called MUST be in the symtable... */
-  if (fb_decl == function_block_type_symtable.end_value()) ERROR;
+  function_block_type_symtable_t::iterator iter = function_block_type_symtable.find(function_block_type_name);
+  if (iter == function_block_type_symtable.end()) ERROR; // The function block type being called MUST be in the symtable.
+  function_block_declaration_c *fb_decl = iter->second;
 
   /* loop through each function block parameter, find the value we should pass
    * to it, and then output the c equivalent...