That is a memory error. By the sounds of it you have 32mb PHP memory (which is the min requirement) but in this case the site requires more then that to work. You will need to crank the PHP memory limit up to 64mb if you want to be safe.
You can ask your webhost to do this. Or if this is your own server you can edit the setting in the 'php.ini' file edit the line - memory_limit = 32M to something like memory_limit = 64M , save the file then restart your server