Hey Curly...
This is a shot in the dark, but do you have your tags separated by comma in a single line in your .htx file? I've noticed in the past that if WL tags are past a certain column in the .htx file, the program won't replace them with data. I'm not sure what the limit is or whether this has been corrected since the last time I ran into it.
Hope this helps,
Scott
arlingtonweather.net