Drupal site crashes when clearing the cache after Entity API installation-Collection of common programming errors

I’m trying to install the module Entity API. But if I clear the cache after the installation, my Drupal site crashes (i.e. something is causing a signal segmentation fault). I can’t figure out why, because I have used the Entity API module before without any problems.

I’m using Drupal 7.13. I have tried both available versions, but it doesn’t work. I have manually installed the module.

Can anyone please help me to understand what’s going on?