Reply To: Post id = does not exist › Forums › SNAP – WordPress Plugin Forums › Post id = does not exist › Reply To: Post id = does not exist September 17, 2013 at 11:21 am #22477 NextScripts.comParticipant1. The answer is in the FAQ – #4.11:Support FAQ2. The most common reason for this is the amount of memory allowed for PHP on your server. Please check and make sure it’s not 32M or less. You need at least 64M, but if you have other plugins 128M or even 256M is recommended.