Thank you for your post.
The complete forum thread can be found at:
This issue was addressed in both FileMaker Pro 15.0.1 and FileMaker Pro 14.0.6 when accessing hosted FileMaker Server 14.0.4 files. If the clients are using an earlier version of FileMaker Pro 14, have them update to FileMaker Pro 14.0.6. If the clients are using FileMaker Pro 13 or earlier, then consider moving back to FileMaker Server 14.0.3.