This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice This article is not considered official documentation for K2 software and is provided “as is” with no warranties.


An error is displayed when editing/refreshing an Endpoints Assembly Service Instance or executing any SmartObject under this instance.


The following error is displayed: 

Method not found: ‘Double SourceCode.SmartObjects.Configuration.SmartObjectsRuntimeConfigurationSection.get_AppDomainProxyTimeOut()’

Troubleshooting Steps

To resolve the issue, please complete the following steps:

1. Go to K2 Install directory\Host Server\Bin
2. Locate SourceCode.SmartObjects.Configuration.dll

3. Ensure that the dll is NOT blocked (right-click > properties) and that it has the correct version. (Compare it with a working environment or log a support ticket).

4. If the file is replaced, please ensure that you restart K2 service and do an IIsreset.