Cancatenate the nof3 files gives error

Hi All, While preparing the upgrade of netbackup 7.5 to 7.5.0.7, I have downloaded the client package from the following link: http://www.symantec.com/business/support/index?pag... However, the first package .1of3 is giving an error while cat the three files "1of3,, 2of3 and 3of3"

# cat "NB_CLT_7.5.0.7_tar-split.1of3""NB_CLT_7.5.0.7_tar-split.2of3""NB_CLT_7.5.0.7_tar-split.3of3"> "NB_CLT_7.5.0.7.tar"

cat: cannot open NB_CLT_7.5.0.7_tar-split.1of3

I tried to cat two of them "2of3 and 3of3" and it worked fine. I want to know if this file as put on the website is really not correct. If so, is there any other place from where I can take the tar file.

Thanks