[Users] about "position_(x|y|z)[0-9]..asc" in CarpetRegrid2

[Kentaro Takami]

Thank you, Erik and Eloisa,

I could find out the cause of this problem by your suggestions.
It is just related with "Whisky" and "Whisky_MoveCarpetGrids" thorns
and I could fix it.

Thanks.

Kentaro