Symptoms

When accessing K2 Designer, the following error is encountered:

Server Error in '/Designer' Application.
 

Diagnoses

Error Details:

Server Error in '/Designer' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error:

Line 274:
Line 275:
Line 276:
Line 277:
Line 278:

Source File: C:Program Files (x86)K2 blackpearlK2 smartforms Designerweb.config Line: 276

 

Resolution

The 'targetFramework' attribute in the element of the Web.config file is used only to target version 4.0 and later of the .NET Framework (for example, ''). If you are compiling this Web application for a version of the .NET Framework earlier than 4.0, remove the 'targetFramework' attribute from the element of the Web.config file.

So either remove the targetFramework attribute, or replace the value with "4.0"