Really the error is:
Code
Out of memory during "large" request for 2101248 bytes, total sbrk() is 66592768 bytes at /usr/home/forums.atlantisrising.com/htdocs/cgi-bin/ubb/ubb_lib_filehandle.cgi line 420.
It's telling you that you're out of available memory in the request.

If you simply google search "Out of memory during "large" request" you can find several sites with discussions on fixing such errors.

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
Do you need Forum Install or Upgrade Services?
Forums: A Gardeners Forum, Scouters World
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
Longtime Supporter & Resident Post-A-Holic
VNC Web Services: Code Modifications, Upgrades, Styling, Coding Services, Disaster Recovery, and more!