Rafa: arreglando funcion de abrir file.

filemanip.cpp

 filemanip::filemanip(QString filename){
     file = new QFile(filename);
     file->open(QIODevice::ReadOnly) ;
-    if(file)
+    if(file->exists())
         in = new QTextStream(file) ;
-    else
-        qDebug("Cant open!") ;
+    else {
+        qDebug() << "Cant open " + filename + "! Exiting program..." ;
+        exit(1);
+    }
 
 }