--- a/ui/mainwindow.cpp	Fri Aug 08 14:37:02 2014 +0200
+++ b/ui/mainwindow.cpp	Fri Aug 08 14:37:31 2014 +0200
@@ -313,7 +313,9 @@
         return;
     }
 #else /* WIN32 */
+    /* On linux installDir is <prefix>/bin */
     QStringList parameters;
+    installDir.cdUp();
     parameters << "--prefix" << installDir.path();
     bool sudo_started = false;
     bool use_sudo = is_admin() && is_system_install();
@@ -333,6 +335,7 @@
             }
         }
     }
+    qDebug() << "Starting process " << filePath <<" params: " << parameters;
     if (!sudo_started && !QProcess::startDetached(filePath, parameters)) {
         qDebug() << "Failed to start process.";
         return;