DS sees UPS but does not allow me to enable it

[Mookinato 0]

Custom DS running DSM5.2-5967. Everything has run well for years. Decided I should really have a UPS and bought a CyberPower CP1500. I plugged it in via USB and can see it listed on the Information tab. But after days of uptime and a couple reboots I cannot enable support for the UPS. Clicking the checkbox has no effect. Please advise. Thank you.

[MBchristoff 0]

What loader are you using?

I can recall one of the 5644 loaders having a issue with UPSes.