diff --git a/@GUI/pvs_ext_call_sim.m b/@GUI/pvs_ext_call_sim.m
index e43d8bac92c9a8c582e2d0a192b776fddb339780..801a9e7812a2c2fccc05730fa3192bbcedf18929 100644
--- a/@GUI/pvs_ext_call_sim.m
+++ b/@GUI/pvs_ext_call_sim.m
@@ -20,7 +20,7 @@ object.PVS.type_mode = 1;
 
 
 % copy pvs theory to pwd
-copyfile(fullfile(fileparts(which('TTdiag')),'PVS_theories','matlab_types.pvs'),pwd);
+copyfile(fullfile(fileparts(which('TTdiag')),'PVS_theories','*'),pwd);
 
 % inputs = regexp(object.Data.function_inputs,',','split');
 % for i=1:size(inputs,2)
diff --git a/@PVS_checker/generate_pvs_file.m b/@PVS_checker/generate_pvs_file.m
index ddfbba5ef9c9d2f2f7851e322e6233d62b0e4815..600d486f1e690e14a349ca19fafa5bb1736cdc7c 100644
--- a/@PVS_checker/generate_pvs_file.m
+++ b/@PVS_checker/generate_pvs_file.m
@@ -87,7 +87,17 @@ fileid = fopen([filename '.pvs'],'w');
 code = [];
 code = sprintf('%s:THEORY\nBEGIN\n',function_name);
 %code = [code sprintf('IMPORTING Funcs\n')];
-code = [code object.pvs_check_for_imports];
+imports = object.pvs_check_for_imports;
+if ~isempty(imports)
+    
+    if ~isempty(regexp(imports,'double|single', 'once'))
+        % flag to copy files
+        error = 2;
+    end
+end
+code = [code imports];
+
+
 
 code = [code object.user_imports];
 if object.type_mode
diff --git a/@PVS_checker/pvs_check.m b/@PVS_checker/pvs_check.m
index 7852872e26422b6c145842eb3f70cf80a2140273..f835410c267335b268998e53d31859845fe6845a 100644
--- a/@PVS_checker/pvs_check.m
+++ b/@PVS_checker/pvs_check.m
@@ -16,11 +16,21 @@ output = [];
 
 function_names = EMLGenerator.parse_inputs(object.data.function_name);
 function_name = char(function_names{1}(1));
+
+
+
+
 error = object.generate_pvs_file(function_name);
 if error == 1
     return;
+elseif error == 2
+    % copy pvs files over.
+    copyfile(fullfile(fileparts(which('TTdiag')),'PVS_theories','*.*'),pwd);
+
 end
 
+
+
 object.pvs_version = PVS_checker.get_pvs_version;
 
 
diff --git a/@PVS_checker/pvs_check_for_imports.m b/@PVS_checker/pvs_check_for_imports.m
index 1d60f9270b04311841feb9d5978d5969d1e552d5..4320da3a5db2e3d87a122ec0b0d68089fbc51cfe 100644
--- a/@PVS_checker/pvs_check_for_imports.m
+++ b/@PVS_checker/pvs_check_for_imports.m
@@ -24,7 +24,7 @@ function string = pvs_check_for_imports(object)
 
 
 
-hashtable = {{'sqrt', 'reals@sqrt'} {'sin', 'trig@trig_basic'} {'cos', 'trig@trig_basic'} {'tan', 'trig@trig_basic'}};
+hashtable = {{'sqrt', 'reals@sqrt'} {'sin', 'trig@trig_basic'} {'cos', 'trig@trig_basic'} {'tan', 'trig@trig_basic'} {'double', 'double'} {'double_finite', 'double'} {'single' 'single'} {'single_finite' 'single'}} ;
 
 % check for imports in the results grid.
 for i=1:size(object.data.Grid0.Cells,2)