New logwatch module not working in cron

[Gordon Charrick]

I wrote a new logwatch module for vnstat and put it in 
/etc/logwatch/scripts/services. If I run logwatch from the command line, 
it works fine. When cron runs it, the vnstat module doesn't run. The 
module is extremely simple - all it does is run the vnstat command. 
There are no errors being reported. All I get is an empty begin/end 
section for vnstat in the email from logwatch.

I know it's not selinux because I originally had problems with that and 
I fixed that with a local selinux module for vnstat. I also specifically 
have the full path to the vnstat command in the logwatch vnstat script.

Anyone have any clues on fixing this?

Gordon