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Issue with WPM on some players - Same transaction works fine on other players.

Hi All,

I am having an issue with one of my WPM transactions not working properly. Unfortunately I'm not sure what could be causing it. The same transaction works fine on some of my other players but not on all of them. I've already tried uninstalling the player, service , changing the SEUM Accounts in local users and groups on the player into the admin group. All with no luck

Looking at the log for the transaction I see this error message

" 2016-11-15 12:15:09,569 [SolarWinds.SEUM.Agent.Worker.exe][Browser Thread] ERROR SolarWinds.SEUM.Player.WatiN.WatiNPlayer - Unable to get source of page.

System.Runtime.InteropServices.COMException (0x8002801D): Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) "

Has anyone had this error in the past? If so how did you resolve it? I have even tried re-recording the transaction locally on the player - and it records fine but then when I go to play the transaction back. No luck.