stops working beyond a certain number of elements

cleanup.R

elem = function(x,y) { x[[y]]}
splitspc = . %>% as.character %>% strsplit(' ', fixed=TRUE) %>% unlist
a = dbraw$V6  %>% head(n=10000000) %>% laply(splitspc)
method  =a[1,]
url = a[2,]

# output:
# > a = dbraw$V6  %>% head(n=100) %>% laply(splitspc)
# > a = dbraw$V6  %>% head(n=1000) %>% laply(splitspc)
# > a = dbraw$V6  %>% head(n=10000) %>% laply(splitspc)
# Error: Results must have the same dimensions.