using RMySQL on OS X 10.6.6 - R 2.12.2

Hi,


I trying to export data from large images (satellite data) in to MySQL data via R using RMySQL (RMySQL_0.7-5.tgz installed via R Console). The code works fine but after some time it gives to following error:

"
*** caught bus error ***
address 0x100000012, cause 'non-existent physical address'

Traceback:
1: match.fun(FUN)
2: lapply(z, is.object)
3: unlist(lapply(z, is.object))
4: order(jseq)
5: `[<-.data.frame`(`*tmp*`, , value = list(gid = 78014, yr = 2009,     dy = 49, ndvi = 6448, rel = 0))
6: `[<-`(`*tmp*`, , value = list(gid = 78014, yr = 2009, dy = 49,     ndvi = 6448, rel = 0))
7: write.table(value[from:to, , drop = FALSE], file = conb, append = TRUE,     quote = FALSE, sep = "\t", na = .MySQL.NA.string, row.names = FALSE,     col.names = FALSE, eol = "\n", ...)
8: safe.write(value, file = fn)
9: mysqlWriteTable(conn, name, value, ...)
10: is(object, Cl)
11: is(object, Cl)
12: .valueClassTest(standardGeneric("dbWriteTable"), "logical", "dbWriteTable")
13: dbWriteTable(con, "datamod13q1", datamod13q1, append = T, row.names = 0)
aborting ...
Bus error
cube008:MODIS janv$ 
"

As an example I am adding the R script that I am using: 
Which runs through each pixel and exports the data to add table:

# read all pixels within a certain boundary
gid <- 1
col <- 7:428
row <- 2557:2760

"
# Create first xy table from one image
for (i in row) {
  for (j in col) {  
    rc <- c(i,j)-1 # line, sample !
    # read data for specific row and column
    ndvi <- getRasterTable(rndvi, offset=rc, region.dim=c(1, 1))
    rel <- getRasterTable(rrel, offset=rc, region.dim=c(1, 1))

    # prepare to insert into MySQL database
    (datamod13q1 <- data.frame(gid=gid,yr=yr, dy=dy, ndvi=ndvi$band1/10000,rel=rel$band1))
    # THIS IS ONE ROW WITH 4 COLUMNS OF NUMERIC DATA
    dbWriteTable(con, "datamod13q1", datamod13q1, append = T, row.names = 0)
    gid <- gid + 1
  }
}
"

Any advice to solve this error and make this script more efficient are welcome.

Thanks for your help
J