Symptoms

New Timer control does not get installed if you have custom underground 'Timer' control
 

Diagnoses

The error occurs after the latest version of K2 (4.6.9) is installed and the new 'Timer Control' does not show. This may be because the timer control may have been installed before hand as a custom control (from community site).
 

Resolution

To remove underground timer control

Note: Please do backup your DB before applying the following script and changes.

1) Run these scripts against K2 DB
delete from oForm].mControl] where TypeID = 'c1972d71-79ee-46bc-8015-ec1a95a36a32'
delete from oForm].mControlTypeEvent] where ControlTypeID = 'c1972d71-79ee-46bc-8015-ec1a95a36a32'
delete from oForm].mDataTypeControl] where ControlTypeID = 'c1972d71-79ee-46bc-8015-ec1a95a36a32'
delete from oForm].mControlTypeImplementation] where ControlTypeID = 'c1972d71-79ee-46bc-8015-ec1a95a36a32'
delete from oForm].mControlType] where ID = 'c1972d71-79ee-46bc-8015-ec1a95a36a32'

2) Register the OOB control

Then run a repair using SmartForms control Pack installer.