7.6 No Techs showing to assign tickets to...

7.6 No Techs showing to assign tickets to...

 Hello,
    After upgrading to 7.6 I am unable to assign tickets to techs. When I select the 'Technician' drop down box it is empty. If I try to change the 'Site' the requester is in (which should then change which techs are available for me to assign to the ticket) I still have no techs shown in the Technician field and also recieve the attached IE error-

Note: I have tried this from multiple computers.

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