Hello,
This is my first time on this forum so bear with my ignorance!  I'll outline the background to my setup and then explain the error.
We have a small business with a server running SBS2011 and PC's running Windows 8 and 8.1 connected to the server in a domain environment.
We are using a CRM product called Tall Emu which uses SQL Server 2008 R2 on the server for the database and the PC's run a local application which connects to this database.
Every day, but completely randomly and sometimes multiple times per day, a user will try and open the application on a PC and get the following error message.

Could not load file or assembly 'Microsoft.SqlServer.SqlEnum, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified.

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