Unable to allocate memory for pool errors

I update to File entity 7.x-2.0-unstable7+39-dev and Media 7.x-2.0-unstable7+25-dev smoothly. After updating to Media YouTube
7.x-2.0-rc2 and running the update.php process I got the following errors, which happen now in anything I do. My PHP memory limit is 256M.

<ul>
  <li>Warning: include_once() [function.include-once]: Unable to allocate memory for pool. in include_once() (line 21 of /Users/shaisamuel/Sites/acquia-cloud-dev/shaisamuelgm/docroot/sites/all/modules/contrib/media_youtube/media_youtube.module).</li>
  <li>Warning: require_once() [function.require-once]: Unable to allocate memory for pool. in module_load_include() (line 330 of /Users/shaisamuel/Sites/acquia-cloud-dev/shaisamuelgm/docroot/includes/module.inc).</li>
  <li>Warning: require_once() [function.require-once]: Unable to allocate memory for pool. in _registry_check_code() (line 3100 of /Users/shaisamuel/Sites/acquia-cloud-dev/shaisamuelgm/docroot/includes/bootstrap.inc).</li>
</ul>

Any thought?