Changes made in revision 2 of update_info.txt

--- /tmp/cvx_q9PAlp	2012-02-07 19:46:30.000000000 -0800
+++ /tmp/cvx_onIbhH	2012-02-07 19:46:30.000000000 -0800
@@ -1,8 +1,12 @@
 Cautions
-B estimation is not entirely stable--at least with more than 2 spp and unconstrained Q and R.  
+B estimation is not entirely stable--at least with more than 2 spp and unconstrained Q and R. 
 
-Version 2.66 July 8, 2009 versus 1/21/09 version
+Version 2.68 Sept 24, 2009
+fixed stderr computation in the emHessian() function; typo
+pulled the stderr and CI calculations into a helper function computeCIs()
+blocked B estimation when B is diagonal and Q is not diagonal; something is wrong with the computation; perhaps there are multiple solutions (not fully constrained problem)
 
+Version 2.67 July 17, 2009 versus 1/21/09 version
 fixed x00 init bug in MCInit when x00init<1
 fixed bugs to B estimation and allow fixed B and fixed Z and fixed U
 changed parametric bootstrap to match Stoffer and Wall rec to use e(1:3,) original rather than bootstrapped.