Index: sources/gui/qml/components/USBButton.qml
===================================================================
diff -u -rfa8a24789926622048cdd480ea48abd9596c03b3 -r5e0731af5ae5e11d3981e4d3065a886975fb7fc3
--- sources/gui/qml/components/USBButton.qml	(.../USBButton.qml)	(revision fa8a24789926622048cdd480ea48abd9596c03b3)
+++ sources/gui/qml/components/USBButton.qml	(.../USBButton.qml)	(revision 5e0731af5ae5e11d3981e4d3065a886975fb7fc3)
@@ -21,6 +21,9 @@
 import "qrc:/components"
 
 TouchRect { id : _root
+
+    property bool disabled : false
+
     width: 50
     height: width
     x: width - 10
@@ -40,10 +43,6 @@
     Connections { target: _GuiView
         onDidUSBDriveUmount : _root.enabled = false
         onDidUSBDriveRemove : _root.enabled = false
-        onDidUSBDriveMount  : _root.enabled = true
-        onDidExportLog      : _root.enabled = false
-        onDidExportService  : _root.enabled = false
-        onDidExportTreatment: _root.enabled = false
-        onDidExport         : _root.enabled = true
+        onDidUSBDriveMount  : _root.enabled = true && ! disabled
     }
 }