Incomplerte sync in Lightroom

[#1]

My Lightroom catalogue seems to get stuck with one or two images failing to sync every time. I presume there is a corrupt file somewhere, but how can I sort this out? Thanks for any advice.  Terry

[#2]

My Lightroom catalogue seems to get stuck with one or two images failing to sync every time. I presume there is a corrupt file somewhere, but how can I sort this out? Thanks for any advice.  Terry

[#3]

Which Lightroom are you using? How do you know all of the images haven't synced? Have you checked Lightroom on the web at Lightroom.adobe.com to see what images have and have not synced?