For consumables, I usually use the "Tracker" feature on the custom roll.
It is explained in the
MoreCore help page.
The consumables looks like you need to open the roll window when ever you want to change some thing on it. I may be wrong. It looks like it is more broke than the Tracker.
Basically, you give a name (e.g "Gun clip"), then click on the "Enable Tracker" box, and fill in the minimum and maximum. You can also give it an icon for when it is used.
I like it because it shows the min and max on the character sheet. The first box is the Max, and the second is the current number available. Then when you use a "charge" you click on the current number available box. In the chat box you'll see something like this.
"No Name is using Small Gun Clip (2 of 4 remaining)"
or
"No Name is using Small Gun Clip (0 of 4 remaining)"
When ready to "recharge" or "change the clip" right click on the current available box, and select "reset". This appears in the chat box.
"No Name has reset Small Gun Clip
The previous value was 0"
Don't select "reset all", it has more issues.
I have run into the rActor thing before. It is not a fun thing to fix.