Ok, there is info in ispsystem docs about adding extensions here:
http://ispsystem.com/docs/isp-lite-e...el.config.html
I had followed these instructions perfectly but was still running into a problem, which is why I posted the feature request here. After some time I talked to the friendly folks over at ISPsystem and they have provided additional info about the xmlcache in ispmgr. You can try to renew your messages cache with the following commands.
Code:
rm -rf /usr/local/ispmgr/var/.xmlcache
/usr/local/ispmgr/sbin/xmlcache ispmgr
killall ispmgr
If you want to add something into your extensions, and feel you have done everything correctly; this may solve your problem.