Well with no help from the "Weatherpanel" people I think I solved my own problem. After downloading the "Black&White" skin package and installing the available icons for the weatherpanel I noticed a setting for rotating icon sets. The default icon set seems to be the only set that was having a problem. With the BW set in place it would run through all the icon sets and when it came to the defaut icons they would not show up. I have only the BW set on now and so far so good, no vanishing icons!