Error: "System.Configuration.ConfigurationErrorsException. An error occurred creating the configuration section handler for frameworkSecurity"

This support note applies to:

• AO Practice Manager (NZ)
• AO Practice Manager (AU)
• AE Practice Manager (NZ)
• AE Practice Manager (AU)

In MYOB Accountants Enterprise (AE) and Accountants Office (AO) you may experience the following message when attempting to open Practice Manager on a workstation:

"System.Configuration.ConfigurationErrorsException. An error occurred creating the configuration section handler for frameworkSecurity: That assembly does not allow partially trusted callers".

This issue will occur if a Practice Manager workstation setup has not been performed correctly.  

Please refer to one of the following articles:

• Running a combined workstation installation or uninstallation for Accountants Enterprise
• Installing and Uninstalling Accountants Enterprise (AE) on a workstation
• Uninstalling and reinstalling AO Workstation

If a workstation setup has been performed correctly and the issue persists, please update .NET CASPOL permissions as per Checking or updating CASPOL permissions and turning off CAS