Image captcha module not showing in admin after updating Drupal to 7.35
I discovered that the upgrade has renamed the path of submodule Image captcha to sites/all/modules/captcha0/image_captcha instead of the correct sites/all/modules/captcha/image_captcha (renamed filename value in table system of database. Physical path not changed). After that I have been forced to reinstall the module.

This is simply not serious, This seems a Drupal or a module bug and I have spent very bad hours trying to figure out what went wrong when I followed steps one by one and was very cautious.