Object variable not set Error in Preferences/Calendar Profile

When saving some changes to the CalendarProfile, in other words called as Preferences, you may get the following error message repeatedly sometime after opening it / sometime after click the OK button to save the changes.

This happens usually in the mail-in applications.
Object variable not set
On Module: CLICK
On Line: 32
On Method: CLICK

Hiding a Rich-Text field in Lotus Notes

Hiding a rich-text field. This is what my sis has been trying to achieve from past 2 hours now. Ah... it feels so irritating when you try to use all sorts of hide-when condition and it doesn't work. We tried normal field properties hide-when condition, tried sections, tried computed/computed for display etc. It did not hide.

Then I tried to google about it. It showed me several links with all stories in it. In the summary of a link I saw the name "subform". Eureka!!! I found it.