How are the Update Categories and Cache Categories settings set, and are you moderating files or comments?
The PhotoPlog Pro requirements are currently as follows:
- vBulletin 3.6.0+
- PHP 4.3.3+
- MySQL 4.0.16+
- PHP with GD2
- Safe Mode Off
PhotoPlog Pro was built for vB 3.6. Pro will not work on vB 3.5 as there are differences between vB 3.5 and vB 3.6.