Master branch build gives me "externally referenced" errors and as a result saving takes almost 10 minutes

Development Audio
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1

Hello everyone,
I would like to report this Dropbox - Error

Since i updated from git yesterday, unreal gives me all these errors and i do not understand why.Everything works ok until i decide to press “save all” . It then gets stuck for a few minutes (task manager shows unreal as not responding) and when it gets unstuck it throws me the above message . If i press ok then it disappears and it saves normally .

Thank you

2

Forgot to tell you that my project takes the same amount of time to fire up for the first time as it takes to save, meaning that unreal is doing some kind of check that slows everything down. This also happens everytime i decide to load a new level.
29396-
And it is not limited only to audio as the first picture implies.