P: Error in cloud sync dialog "Some Photos Invalid"

[FeedbackCommunityMember]

I saw this annoying red "!" exclamation mark on my Lightroom CC, which states, "Some Photos Invalid"

There are two problems 

1) Which photos? 
2) Where are the verbs, I am no English expert but it should have been "Some photos are invalid" (mind case and verb)

[fliplip1]

What is a 'troublesome' file? LR seems to think perfect files are 'troublesome' Are you suggesting we delete all our images because this poorly programmed software cant handle them? If it cant handle images that meet the spec what use is it?