diff -r a474900d5bd2 -r 255c853ea2f0 test/Tools/isac/Knowledge/rootrateq.sml
--- a/test/Tools/isac/Knowledge/rootrateq.sml	Thu Dec 22 11:12:18 2016 +0100
+++ b/test/Tools/isac/Knowledge/rootrateq.sml	Thu Dec 22 11:36:20 2016 +0100
@@ -91,7 +91,7 @@
 term2str t = "1 = 2 + -2 * sqrt x";
 (*... which works; thus error must be in script interpretation*)
 
-"~~~~~ fun me, args:"; val (((_,tac):tac'_), (p:pos'), _, (pt:ptree)) = (nxt, p, c, pt);
+"~~~~~ fun me, args:"; val (((_,tac):tac'_), (p:pos'), _, (pt:ctree)) = (nxt, p, c, pt);
 val (pt, p) = case locatetac tac (pt,p) of
 	("ok", (_, _, ptp))  => ptp;
 "~~~~~ fun step, args:"; val (ip as (_,p_), (ptp as (pt,p), tacis)) = (p, ((pt, e_pos'), []))