However, when I try to save the Event file after the save as box appears another box appears asking about display information (can tick no display info or display in other languages, English). Regardless of which I click on this box a warning message then appears saying 'The system cannot find the file specified'.
Can you check if the following registry key exists?:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Channels*Microsoft-Windows-DxpTaskRingtone/Analytic*
If so, can you delete the Microsoft-Windows-DxpTaskRingtone/Analytic registry key.
Right-click Microsoft-Windows-DxpTaskRingtone/Analytic > Delete
Create a System Restore Point beforehand and restart the computer afterward.
There seems to be a bug in the update to Windows 8.1/Windows 2012 R2 that has affected some users. it's described in the following link:
http://www.iconicit.co.uk/blog/manageability-event-viewer-errors-windows-2012-r2-upgrade