Before few months, i have installed openpublish distribution in my server and launched my site. On top of that i have installed many modules and made some designs. But, I'm facing issue such as
"There is a security update available for your version of Drupal. To ensure the security of your server, you should update immediately! See the available updates page for more information and to install your missing updates"
I could not find any latest release of Openpublish. I have some serious doubt whether i can upgrade with the drupal core because i will lose many modules came as part of the Openpublish distributions. So, I'm very much concerned about it. Can I just Ignore this Security Update warning or is is a serious problem?? Please, somebody help me with some solutions.