Error: The Template property must be initialized before rendering this control. It cannot be null when the control is rendered.

While using SPGridView with AllowGroupCollapse=True was returning me this error on Binding.

The Template property must be initialized before rendering this control. It cannot be null when the control is rendered.

Adding EnableViewState = False resolved the issue.

Hope this helps!!!!

Error: Group Not Found in SharePoint

Today while programatically adding user in SharePoint group I was getting error "Group Not Found" in my custom workflow.

The error was getting thrown at below line:
SPGroup grpViewer = workflowProperties.Web.Groups["GroupName"];

After some digging, I found that the error was coming since the group was not having permission on site. After giving read permission for the group on site, the error was gone.

Hope this helps!!!!