Hi,
This is very strange, I can remove all the code untill having only the base class code, yet errors are still here and I can’t build because of that, so I really don’t think the issue comes from the code itself (or it is?).
Here is an example, I’ve removed my code (there wasn’t a lot) and now it looks like a freshly created actor. I have also cleaned, recompiled, saved and restart many times :
The header has an issue with begin play, and the cpp with the tick. I thought I could just ignore it but build fails and live coding update fails too
This is a bit problematic since this behavior is random, sometimes errors get away with clean or recompile, sometimes they don’t and I recreate the actor with same code, wich works, or I have to create an other project (these are learning projects so no real work lost 
but iI have difficulties to learn if I can’t simply remove code and rewrite)
I have noticed a concerning message when I open VS, maybe it is related (I try to translate, it will probably not be exact same words, but I don’t know how to set VS in english and google can’t find the sentence in my langage, sorry 
) .
It says :
“The command ended with exit code 1.
Blueprint Analysys - Error : An issue occured during Unreal Engine integration execution for the project.” Something like that
I’ve checked UE integration config and nothing complains here (pluggin is enabled in UE as well) :
No doubt somebody here will find the cause in a matter of seconds 
, I’m probably missing something obvious.