Index: src/SymTab/Validate.cc
===================================================================
--- src/SymTab/Validate.cc	(revision 994ec2c039c407fb50939eeada77a809be205d12)
+++ src/SymTab/Validate.cc	(revision e01559ccdf149d938faa048d3be60e6b7461bb1c)
@@ -9,7 +9,7 @@
 // Author           : Richard C. Bilson
 // Created On       : Sun May 17 21:50:04 2015
-// Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Jul 16 16:10:02 2015
-// Update Count     : 189
+// Last Modified By : Rob Schluntz
+// Last Modified On : Wed Jul 22 13:16:00 2015
+// Update Count     : 194
 //
 
@@ -404,4 +404,9 @@
 			} // for
 		} // for
+
+		if ( ctx->get_parameters().size() != contextInst->get_parameters().size() ) {
+			throw SemanticError( "incorrect number of context parameters: ", contextInst );
+		} // if
+
 		applySubstitution( ctx->get_parameters().begin(), ctx->get_parameters().end(), contextInst->get_parameters().begin(), ctx->get_members().begin(), ctx->get_members().end(), back_inserter( contextInst->get_members() ) );
 	}