I'm using the latest 2.0.10 release, and simply all I did was close minecraft for the night, then when I came back on this morning, the field power started dropping way faster than I could stop it. I didn't get a chance to see what happened with my potentiometers or comparator but as far as I know they were fine, maybe they were just loading? I don't know, and don't have a backup of just before it started, only before I turned on the reactor.

Edit: I quickly ran to test the flux point i had connected to the input, seems it lost connection with the plug... so that's the closest reason i can think of. for some reason the two mods have never worked too well together.

I had a similar issue i can up to the reactor (After server reboot) and tried to open the interface Which would not want to open. so i Flipped on a emergency power switch and then tried to get a signal with a comparator and then OpenComputers neither of them could interface with the reactor that was clearly still running and using my power , a few moments after this my reactor started its whole time to screw over you and your base thing.

EDIT: In case you have a reactor that has glitched out go above it and run something like this "/fill ~ ~-10 ~ ~ ~ ~ minecraft:stone"
Hope this manages to save some ones base, did not save mine

This should be fixed in the latest release. Im guessing this is related to an issue where reloading chunks would disconnect components from the core.
What build are you using? There are 2.0.10 builds. .194 is the one with the fix

This happened in 193
The server is currently running 199 and so far it would seem like it has been fixed.

Nice!