Errors of robots.txt unreachable in google webmaster sitemap

Please anyone help me

[pervezalam]

Hi,

I am getting "robots.txt unreachable" error in Google webmaster submitted site map, there is no no one "robots.txt" file on the server, and all these URL are working properly. There is no one broken link on this website, that i have already checked.

I am not able to find the solution of this problem. Please suggest me.

These are 4 problem that are showing..

[picasoconsulting.com...]
robots.txt unreachableHelp Aug 24, 2008

[picasoconsulting.com...] robots.txt unreachableHelp Aug 24, 2008

[picasoconsulting.com...] robots.txt unreachableHelp Aug 24, 2008

[picasoconsulting.com...] robots.txt unreachableHelp Aug 24, 2008