Fixed behaviour in case of missing X13 binary...

... Also do not crash dynare_config() if matlab is not able to download the X13 binary.

src/@x13/run.m

@@ -22,8 +22,16 @@ function run(o, basename)
 % Print spc file.
 basename = o.print();
 
+% Get expected path to X13 binary.
+x13b = select_x13_binary();
+
+% Test for the existence of the binary.
+if ~exist(x13b, 'file')
+    error('X13 is not available, so we cannot run the generated spc file.')
+end
+
 % Run spc file.
-[~, ~] = system(sprintf('%s %s', select_x13_binary(), basename));
+[~, ~] = system(sprintf('%s %s', x13b, basename));
 
 o.results.name = basename; % Base name of the generated files.
 

src/initialize_dseries_toolbox.m

@@ -78,8 +78,13 @@ end
 
 % Install X13 binaries
 opath = pwd();
-cd([dseries_src_root '/../externals/x13'])
-installx13();
+try
+    cd([dseries_src_root '/../externals/x13'])
+    installx13();
+catch
+    warning('X13 is not available!')
+    p(strmatch('/utilities/x13', p, 'exact')) = [];
+end
 cd(opath);
 
 % Set path

src/utilities/x13/select_x13_binary.m

@@ -40,5 +40,5 @@ elseif ispc()
         x13_binary = sprintf('%s%s%s%s', x13_binary, '32', filesep(), 'x13.exe');
     end
 else
-    error('X13 binary is not yet available for this plateform')
+    error('X13 binary is not available for this plateform')
 end
\ No newline at end of file