Yet another rrd creation problem thread

[jmcmillan]

Ok, I know there are others with similar problems, but I havent seen any quite like this.

When I first add a graph, no rrd file is created at all. Once the poller runs (or I manually run it), the rrd file is created, but the filename isn't quite what cacti is looking for.

Example:
Poller creates: mcpssadams_ms_traffic_in_2447.rrd
Cacti looks for: mcpssadams_ms_traffic_in_2446.rrd

The number at the end is always off by 1. Any idea as to why that is? I don't even know where that number comes from.

Older graphs appear to be working fine.

Edit to add:
Forgot to mention version: 86d

Further fumbling reveals that this only seems to occur on Interface - Traffic (bits/sec, Total Bandwidth) template