diff --git a/CYToolsM2/PALPInterface.m2 b/CYToolsM2/PALPInterface.m2
index 949745c..e132896 100644
--- a/CYToolsM2/PALPInterface.m2
+++ b/CYToolsM2/PALPInterface.m2
@@ -15,10 +15,10 @@ export {
 
 executableDir = "/Users/mike/src/git-from-others/PALPfromTGZ/palp-2.21/";
 
-programPaths#"PALP" = executableDir;
+--programPaths#"PALP" = executableDir;
 PALP = findProgram("PALP", "poly.x -h")
 
-programPaths#"poly.x" = executableDir;
+--programPaths#"poly.x" = executableDir;
 polyx = findProgram("poly.x", "poly.x -h")
 
 -* Code section *-
diff --git a/CYToolsM2/StringTorics/CYPolytope.m2 b/CYToolsM2/StringTorics/CYPolytope.m2
index d3d24b5..179ba6b 100644
--- a/CYToolsM2/StringTorics/CYPolytope.m2
+++ b/CYToolsM2/StringTorics/CYPolytope.m2
@@ -256,7 +256,10 @@ cySetH11H21 = cyData -> (
     (h11, h21)
     )
 
-rays CYPolytope := List => cyData -> cyData#"rays"
+rays CYPolytope := List => {} >> opts -> cyData -> (
+    cyData#"rays"
+    )
+
 dim CYPolytope := List => cyData -> dim polytope(cyData, "N")
 degrees CYPolytope := List => cyData -> (
     if not cyData.cache#?"glsm" then cySetGLSM cyData;
diff --git a/CYToolsM2/StringTorics/CYTools.m2 b/CYToolsM2/StringTorics/CYTools.m2
index 398e5bb..ea92375 100644
--- a/CYToolsM2/StringTorics/CYTools.m2
+++ b/CYToolsM2/StringTorics/CYTools.m2
@@ -193,7 +193,7 @@ moriConeCap CYToolsCY3 := Cone => X -> (
     posHull transpose matrix mori
     )
 
-rays CYToolsCY3 := List => X -> (
+rays CYToolsCY3 :=  List => {} >> o -> X -> (
     filename := (getPolytopeFilePrefix X) | "/points.dat";
     if not fileExists filename then return "points.dat doesn't exist for this CY";
     rys := (lines get filename)/value/toList; -- format: one ray per line (with comma between values), first one is origin
diff --git a/CYToolsM2/StringTorics/CalabiYauInToric.m2 b/CYToolsM2/StringTorics/CalabiYauInToric.m2
index 668cbec..15bbbc3 100644
--- a/CYToolsM2/StringTorics/CalabiYauInToric.m2
+++ b/CYToolsM2/StringTorics/CalabiYauInToric.m2
@@ -161,7 +161,7 @@ normalToricVariety CalabiYauInToric := opts -> X -> (
     -- TODO: this fails if the class group is torsion! (Fails: later it gives an inscrutable error...)
     )
 
-rays CalabiYauInToric := X -> rays cyPolytope X
+rays CalabiYauInToric :=  List => {} >> o -> X -> rays cyPolytope X
 max CalabiYauInToric := X -> X#"triangulation"
 
 -- TODO: triangulation is used with 2 different pieces of data:
diff --git a/CYToolsM2/StringTorics/GVInvariants.m2 b/CYToolsM2/StringTorics/GVInvariants.m2
index b762cd1..d42d830 100644
--- a/CYToolsM2/StringTorics/GVInvariants.m2
+++ b/CYToolsM2/StringTorics/GVInvariants.m2
@@ -431,7 +431,8 @@ extremalCurveInvariant CalabiYauInToric := X -> (
   partition(c -> classifyExtremalCurve(gvX, c, deglimit, degvec), mori)
 ///
 
-TEST ///
+"TEST"
+///
 -- Good test, TODO: place this back in once GVinvariants are working again.
 -*
   restart
diff --git a/CYToolsM2/StringTorics/ToricCompleteIntersections.m2 b/CYToolsM2/StringTorics/ToricCompleteIntersections.m2
index 0f87bc1..0685e53 100644
--- a/CYToolsM2/StringTorics/ToricCompleteIntersections.m2
+++ b/CYToolsM2/StringTorics/ToricCompleteIntersections.m2
@@ -196,10 +196,11 @@ restart
   assert(variety L === X)
   assert(degree L == {1,1,2})
 
-  needsPackage "DanilovKhovanskii"
-  computeHodgeDeligne(-toricDivisor V)
-  oo#1
-  matrix for i from 0 to dim X list for j from 0 to dim X list (-1)^(i+j) * oo#(i,j)
+  -- TODO: ADD BACK IN once DanilovKhovanskii more functional
+  -- needsPackage "DanilovKhovanskii"
+  -- computeHodgeDeligne(-toricDivisor V)
+  -- oo#1
+  -- matrix for i from 0 to dim X list for j from 0 to dim X list (-1)^(i+j) * oo#(i,j)
 
   -- want to be able to turn this into a CalabiYauInToric...
   -- then we can check computations against each other too.
@@ -226,7 +227,8 @@ restart
 ///
 
 
-TEST ///
+"TEST"
+///
 -- DanilovKhovanskii
 -*
 restart
@@ -301,10 +303,11 @@ restart
   hodgeDiamond X
   hh^(1,2) X1 == 69
 
-  needsPackage "DanilovKhovanskii"
-  computeHodgeDeligne (-toricDivisor V) -- this is not the correct answer I think!
-  oo#1
-  matrix for i from 0 to dim X list for j from 0 to dim X list (-1)^(i+j) * oo#(i,j)
-  assert(hh^(1,2) Q == 69)
-  assert(hh^(1,1) Q == 3)
+  -- TODO: add back in once DanilovKhovanskii is in the system
+  -- needsPackage "DanilovKhovanskii"
+  -- computeHodgeDeligne (-toricDivisor V) -- this is not the correct answer I think!
+  -- oo#1
+  -- matrix for i from 0 to dim X list for j from 0 to dim X list (-1)^(i+j) * oo#(i,j)
+  -- assert(hh^(1,2) Q == 69)
+  -- assert(hh^(1,1) Q == 3)
 ///
diff --git a/CYToolsM2/StringTorics/test.m2 b/CYToolsM2/StringTorics/test.m2
index 985b06f..a05da08 100644
--- a/CYToolsM2/StringTorics/test.m2
+++ b/CYToolsM2/StringTorics/test.m2
@@ -1509,7 +1509,8 @@ TEST ///
   assert all(Vs, isSimplicial)
 ///  
 
-TEST ///
+"TEST"
+///
 -- XXX
 -*
   restart
@@ -1596,7 +1597,8 @@ TEST ///
   rays toricMoriCone X
   hilbertBasis toricMoriCone X
 
-  gvInvariants(X, DegreeLimit => 10)
+  --TODO: reinstate this test
+  --gvInvariants(X, DegreeLimit => 10)
 
   -- TODO: add tests for line bundles on X, and their cohomology.
 ///
diff --git a/CYToolsM2/installThese.m2 b/CYToolsM2/installThese.m2
index 5b7eea7..c630a44 100644
--- a/CYToolsM2/installThese.m2
+++ b/CYToolsM2/installThese.m2
@@ -1,21 +1,30 @@
+-- To install StringTorics:
+-- Do these lines in order.
 restart
 uninstallAllPackages()
 restart
 installPackage "IntegerEquivalences"
 restart
 installPackage "StringTorics"
+check "IntegerEquivalences"
+check "StringTorics"
+
+-- At this point, GV invariants functions won't work yet, but everything else should.
+-- To get GV invariants going, compile the code in ComputeGV
+-- and place computeGV on your PATH.
+
+-- to install DanilovKhovanskii
+restart
+uninstallPackage "DanilovKhovanskii"
 restart
 installPackage "DanilovKhovanskii"
-
--- Currently, GV invariants code not functional here, until we can get computeGV compiled and placed here...
--- I have commented out a few tests that use this.  All the following tests run.
 restart
-check "IntegerEquivalences"
-check "StringTorics"
 check "DanilovKhovanskii"
 
--- PALP interface
--- for now, need to install PALP on your computer to use this.
+-- to install the PALP interface
+-- for now, need to install PALP on your computer to use this
+-- (place the palp executables, e.g. poly.x, cws.x, on your PATH)
+-- then:
 restart
 uninstallPackage "PALPInterface"
 restart
@@ -24,5 +33,3 @@ restart
 installPackage "PALPInterface" -- no documentation or tests at all
 check "PALPInterface"
 
--- We can make a similar interface to GV invariants?
--- maybe called GromovWitten or GVInvariants.