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Unable to Create REST Service Instances after upgrade to 4.7.

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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.
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Issue

You are unable to register new REST Service Instances.

Symptoms

When trying to register a new REST Service instance, you may receive the following error:
"SmartObject Server Exception: Method not found 'DoubleSourceCode.SmartObjects.Configuration.SMartObjectsRuntimeConfigurationSection.get_AppDomainProxyTimeout()'"

Resolution

Apply the May CU and Fix Pack 11 and this should resolve the issue. These fixes have been rolled up into the March CU and November CU as well.