Prasad,
Pleaste try the following steps:
1. Delete CuteEditor.dll and all old client files
2. Download the latest build and copy the new CuteEditor.dll, client files.
3. Open your project and remove the reference to the CuteEditor.dll
4. Add the reference to new CuteEditor.dll
5. Recompile your project.
The problem should be resolved.
Keep me posted
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