Same problem here.
We have tested FengOffice on:
- Windows 8.1, IIS 8.5, PHP 5.6 and MySQL 5.6
- Windows Server 2012 R2, IIS 8.5, PHP 5.6 and MySQL 5.6
on both environments we found similar error in log.php (after two days of using FengOffice - log file grown to about 450 MB). All errors says the same:
ERROR: Error: Non-static method BasePlugins::instance() should not be called statically, assuming $this from incompatible context in 'C:\inetpub\wwwroot\fengoffice\application\models\plugins\base\BasePlugin.class.php' on line 201 (error code: 8192)