What's the cause of this ERC error?

Hi,
When I do ERC check,the report show error.but the lvs pass:

ERC Report:Floating polygon connect to no device.
DEVICE_COUNT { } PERM=floatingnet(1;10) ................ 14 violations found

DEVICE_COUNT {
COMMENT = "ERC Report:Floating polygon connect to no device."
VERBOSE = TRUE
CHECK = ALL
COUNT = 0
} PERM=floatingnet(1;10)

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Parent Struct/ Parent Coords/
Cell Struct Cell Coords Net Dev Count
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
In All Instances Of
PCORNER (-48.330, 90.670) NET_14373 0
In All Instances Of
PCORNER (65.670, -23.330) NET_14374 0

........
in top block
top (159.166, 74.673) NET_534396 0
In top block
top (157.982, 68.967) NET_534397 0
In top block
top (110.970, 173.464) NET_534398 0
In top block
top (-38.432, 144.119) NET_534399 0
In top block
top (151.770, 175.719) NET_534401 0
In top block
top (143.432, 173.902) NET_534403 0

.....
the errot all in corner pad, but only report coner pad error in top level,
does it effect?

thanks a lot!

Re: cause of ERC error?

Hi,

Which calibre version used ??
I think u can ignore these errors
A+