The post is for anyone with the same problem and is searching on google about.
This is what show at the log: Assertion failed: Count>=0 [File:D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UnrealType.h]
After update for 4.17 the Compiler Manager made compiler SLOWER and freezes a lot the editor while compile and event worst, it would uncompile/decompile other Blueprints that had nothing to do with the blueprint I was compiling. I unchecked the option ‘Use Compilation Manager’ in Editor - Blueprints at the Project Settings and its perfect again.
The editor would crash every time I would compile one specific Blueprint because other ~10 Blueprints would always uncompile/decompile and when I would click PLAY the editor would try to compile all these Blueprints and would crash, but on restart the editor would work just fine, until I compile that Blueprints.
Sorry for my English.