
I GOT IT!
There are 2 ways to fix this problem. But first let me more clearly define the problem. HOME is an application by HTC that is by default attached to the button that has a little HOUSE on it. Home is nothing more than a simple launcher program. The problem is caused by UNCHECKING the box relating to the troubled program shortcut in the SETTINGS>MENUS screen.
If you uncheck CALENDAR, (as I did) you are selecting not to have CALENDAR appear in the programs listing when you tap START. Since you can only select 7 programs to appear under START, and CALENDAR has a hardware button, I unchecked it to allow another program to show up in START. This caused the related shortcut icon to go dead in HOME.
Home lacks the ability to edit shortcuts. You can delete shortcuts by selecting a catagory, then using the Options tool DELETE. BUT No Edit! Just create a new link to the .EXE or .LNK relating to the desired program. Use File Explorer to locate the file. Most of the files you will find are in WINDOWS>START MENU>PROGRAMS.
The other way to FIX the dead shortcuts is to get a Registry Editor and open the HOME program and tell it where to find the missing links. The location of the HOME application is: HKEY_CURRENT_USER>Software>HomeAP.
I use the PHM free registry editor. Works great.
Or I guess you could always just recheck the box in MENUS and go back to where you started!
AND... While you are fixing your HOME app, FIX the link to MS Messenger. Looks like Microsoft's team has not found the spel checkr either.