gmap marker info text is not visible

I am using gmap module in one of my project.The marker information text is not visible after implementing the gmap.

I found the below url as the solution but it shows some warning messages

http://drupal.org/node/457222

warning: Invalid argument supplied for foreach() in /home/public_html/dev/sites/all/modules/cck/content.module on line 1284.

There is one post at the bottom of it which is my one.I am waiting for it reply.

I am using cck also.

Any help is appreciated.