Symptoms

When creating a new ListView, all controls on the view are blank.
After saving and edit again, it gives error that SMO not set.
 

Diagnoses

This was an issue where upgrading from 4.6.9.24 > 4.6.11 > SF 4.6.11.18 did not overwrite a jscript file on the files system.
File: "C:Program Files (x86)K2 blackpearlK2 smartforms DesignerViewsScriptsourcecode.forms.designers.view.ajaxcall.js"
 

Resolution

There was an AJAX call in the jscript that was no longer needed in a function. This was causing the issue.

Function: "_getSmartObjectListMethodsResult: function (data, textStatus)"
AJAX call: _ajaxCall.View._setListMethodStateForDetailsStep(false)

After commenting the call out, all was well again. This issue was addressed in rollup SF 4.6.11.19. If you run into this issue, please contact support to get the latest SF rollup,