A lot of our clients have reported a problem with the built-in database Backup Tool in Magento version 1.3.2.x, caused by a bug in a Magento core file. The problem is identified by the following error message:
Warning: Invalid argument supplied for foreach() in /home/USERNAME/public_html/MAGENTO_DIRECTORY/lib/Varien/Data/Collection/Filesystem.php on line 234
The good news is that there is a easy fix to the problem. If you are confident editing files in your account, you can follow these steps:
Feel free to open a support ticket if you have any questions or need help applying the fix.