Still error exporting ascii grid generated by DTM grid, please any suggestions?

Hello,

I am still receiving a bizarre error:

Error in write.asciigrid(data_int_ked[1], name1) :
?Asciigrid does not support grids with non-square cells

I do not understand this as I am putting interpolated data back into the cells of an ascii DTM grid with square cells. Information on the DTM I am kriging to is below (I have combined two datasets into elev, COS7 and the Z elevation):

Thank you in advance for your help,

Cara

summary(elev)

Object of class SpatialGridDataFrame
Coordinates:
? ? ? ?min ? ? ?max
X 550119.63 674619.6
Y ?79073.03 167073.0
Is projected: NA
proj4string : [NA]
Number of points: 2
Grid attributes:
?cellcentre.offset cellsize cells.dim
X ? ? ? ? 550369.63 ? ? ?500 ? ? ? 249
Y ? ? ? ? ?79323.03 ? ? ?500 ? ? ? 176
Data attributes:
? ? ? Z ? ? ? ? ? ? ?COS7
?Min. ? : ?380 ? Min. ? : ? -1.510
?1st Qu.: 1500 ? 1st Qu.: ? ?0.180
?Median : 2143 ? Median : ? ?0.630
?Mean ? : 2077 ? Mean ? : ? ?2.083
?3rd Qu.: 2663 ? 3rd Qu.: ? ?4.190
?Max. ? : 4471 ? Max. ? : ? ?8.730
?NA's ? :22337 ? NA's ? :22337.000

Hello,

I am still receiving a bizarre error:

Error in write.asciigrid(data_int_ked[1], name1) : 
  Asciigrid does not support grids with non-square cells

I do not understand this as I am putting interpolated data back into the cells of an ascii DTM grid with square cells. Information on the DTM I am kriging to is below (I have combined two datasets into elev, COS7 and the Z elevation): 

Thank you in advance for your help,

Cara

  

summary(elev)
    

Object of class SpatialGridDataFrame
Coordinates:
        min      max
X 550119.63 674619.6
Y  79073.03 167073.0
Is projected: NA 
proj4string : [NA]
Number of points: 2
Grid attributes:
  cellcentre.offset cellsize cells.dim
X         550369.63      500       249
Y          79323.03      500       176
Data attributes:
       Z              COS7          
 Min.   :  380   Min.   :   -1.510  
 1st Qu.: 1500   1st Qu.:    0.180  
 Median : 2143   Median :    0.630  
 Mean   : 2077   Mean   :    2.083  
 3rd Qu.: 2663   3rd Qu.:    4.190  
 Max.   : 4471   Max.   :    8.730  
 NA's   :22337   NA's   :22337.000