WDE - Could not attach attachments in outbound email

[bharath]

Hi,
Am doing a customization change in WDE. After that I could not attach a file in outbound email.
When checking the logs, I could see the following. Can any one help to solve the issue.

DEBUG tboundEmailViewModel - [.Email.Att.] UpdateEnterpriseEmailInteractionCurrentsAttachments : ______________ last saved Attachments...
DEBUG ia.OutboundEmailView - InteractionViewData_CollectionChanged...  View Data updated 'from this view itself', no need to update controls! : IsSendEmailButtonPressed = False
DEBUG tboundEmailViewModel - [.Email.Att.] UpdateEnterpriseEmailInteractionCurrentsAttachments : ______________ Current Attachments in Attachment Viewer...
DEBUG tboundEmailViewModel - [.Email.Att.] UpdateEnterpriseEmailInteractionCurrentsAttachments : ______________ REMOVE following...
DEBUG ia.OutboundEmailView - InteractionViewData_CollectionChanged...  View Data updated 'from this view itself', no need to update controls! : OutboundEmailView_LastSavedAttachmentsIds = System.Collections.ArrayList