1.if your OS is win10
, uninstalling
vbox and restart computer , then install the 5.2.18 version vbox,
if your OS is Win7, uninstalling vbox and restart
computer , then install the 4.2.8 version vbox,
2. Open the vbox installation directory, set the three processes
VirtualBox.exe, VBoxManage.exe, VBoxHeadless.exe to win7 compatibility mode,
and run as administrator
3. Open VirtualBox to see if there is a link between AR (AC/AP)_Clone_*** and
AR_Base, and delete if there is one.
4. Click VirtualBox Management - Virtual Media Management to delete
AR_Base.vdi. If the prompt cannot be deleted, delete the sub-link below
AR_Base.vdi and then delete AR_Base.vdi.
5. Open the \vboxserver folder in the eNSP installation directory and delete
the folder below the box (if not, skip it)

6. Open eNSP, do not add any analog device, click "Menu - Tools - Register
Device" to register.