Library Sync issue

Hello,

I have a problem when I synchronize the kodi library, the new contents do not appear either in the progress bar or in the media library.
To ask if the database would not be full, and I tried to clean the database, it did nothing.
I deleted a file, a new media appeared, after new sync.
I deleted a folder, several new media appeared after new sync
I did these tests with two versions of Kodi (Jarvis and Isengard) in OpenElec distribution for RaspberryPI2.
The media is stored on a Windows 8.1 machine with SMB services on a storage space of 6TB. I have had no changes on raspberry for several weeks, and for Windows, only weekly updates.
An idea? questions?