Hi Folks,
I have created a custom control in VS2013 and deployed it to SP2013. The control basically contains a textbox in the rendering template.
When deployed, I can edit any list and add the new field to it. However, if I then try and add a new item to the list I am getting an exception 'handle for xyz not found - mycustomcontrol.
I have checked that the field types and control are in the correct directories. Does anyone have an idea why it [SP] might be throwing this exception?