I'm struggling with an issue for which I can't find an explanation. I have two development environments that I use for my projects. I created a simple module for Magento and I tested it on one environment. After overcoming all Magento's complications, the module works as expected. This is on XAMPP.

I then copied the module to the development Linux environment, on a hosted server, and it crashes miserably. I did some debugging, and I found out that a call to Mage::getModel() returns bool(false) instead of the instance of the Model I requested.

I double checked all files and directories, and they match. Database is not involved (not from my side, at least, I don't need tables) and both environments have only me as a User, with Admin permissions.

Any suggestion on where should I start looking is welcome, thanks.