Media synchronization stopps after 11k images

[Archsakas]

It did not solve my problem and made me some more problems with images. Now all images information was resetted. "Unique Filename", "Displayed image subtitle" and "Image Alt-Text" all have changed to default file name..
And if I upload new image in subfolder in images/stories/virtuemart/product it does not sinchronize in virtuemart media manager. It works fine if I upload in product folder.