         if not target?
             target = @base_filename + '.sagetex.sage'
         @_exec
-            command : 'sage'
-            args    : [target]
-            timeout : 45
-            cb      : (err, output) =>
+            command     : 'sage'
+            args        : [target]
+            timeout     : 45
+            allow_post  : false
+            cb          : (err, output) =>
                 if err
                     cb?(err)
                 else


                #console.log('gs ' + args.join(" "))
                @_exec
                    command : 'gs'
                    args    : args
                    err_on_exit : true
                    timeout : 120
                    cb      : (err, output) ->
                        cb(err)

            # delete the copied PDF file, we no longer need it (might use up a lot of disk/memory space)

            command     : latex_cmd
            bash        : true
            timeout     : 45
            allow_post  : false
            err_on_exit : false
            cb          : (err, output) =>
                #if DEBUG then console.log("_run_latex done: output=", output, ", err=", err)
