Not really, no.
A software error of an external synchronization software (nothing to do with Adobe) erased part of my pictures that are included in my Lightroom Catalog. After recovering the pictures from the harddrive, I reincluded them into Lightroom. But as with every data recovery, some of the files seem to have been corrupted due to overwriting and/or incomplete recovery. But Lightroom did import them into the catalog without any problem. However, when working with the files, there was a "There was a problem working with this file" error, but I only saw that after trying to sync with LR mobile.
So after eliminating all the files pictures with errors, the syncing to LR mobile worked. Funny thing is that LR did not crash when working with those files. Only when trying to sync them to LR mobile.