System.ArgumentNullException when i click insert new item

[Luke]

 It will still run but when I throw the exceptions i get this when I click insert new item:

System.ArgumentNullException occurred
  _HResult=-2147467261
  _message=Value cannot be null.
  HResult=-2147467261
  IsTransient=false
  Message=Value cannot be null.
Parameter name: value
  Source=mscorlib
  ParamName=value
  StackTrace:
       at System.Enum.EnumResult.SetFailure(ParseFailureKind failure, String failureParameter)
  InnerException: 

[Jayesh Goyani]

Hello Luke,

It would be nice if you will provide your code.

This error was raised when we assigned any not nullable field assigned into insert control.

Thanks,

Jayesh Goyani

[Eyup]

Hello Luke,

In addition to Jayesh's suggestion, you can also check the issue in on of the recent versions, which may cause a similar error:
http://www.telerik.com/forums/value-cannot-be-null-parameter-name-key-exception-is-thrown-after-q2-2015-release

If it turns out to be the same case, please know that the problem is already fixed and you can download the latest SP version to verify that.

Regards,
Eyup
Telerik