4.18.0 android packaging cook failed / engine crash on launch

Hi,

at the moment i am trying to get into creating apps for android using ue4.
I am encountering 2 in my eyes strange issues that i was not able to come across, i hope someone here can give me a hint on what i might try.

installed software:
after installing ue 4.18.0, i installed […]\UE_4.18\Engine\Extras\AndroidWorks\Win64\CodeWorksforAndroid-1R6u1-windows.exe

project setup:

  • I tried creating a few new Projects using different blueprint templates (2d side scroller, twin stick shooter, puzzle)
  • hardware target: mobile/tablet
  • quality: tried both options
  • starter content: tried both options

problem #1

when i try to launch the game on my phone (launch target), the editor crashes (windows popup “unreal engine has stopped working”, see attached image
crash_on_launch_log_excerpt.PNG)
last line in the output log was
LogMaterial: Verifying Global Shaders for GLSL_ES2
LogMaterial: Missing cached shader map for material TutorialMaterial, compiling.
LogMaterial: Missing cached shader map for material MatineeCam_mat, compiling.

problem #2

after a direct launch did not work, i tried packaging the project, this always fails with
“PackagingResults: Error: Unknown Cook Failure”
(attached files for this:
Cook-2017.11.03-08.59.48.txt
UAT_Log.txt)
after searching the internet i found quite a few similar problems, but none of the given hints seemed to work for me.

what i tried:

  • deleting intermediate / saved folder in project
  • project settings → Android SDK most entries where empty, so i manually inserted the download folders for sdk / ndk / …
  • changed sdk api level to matchndk
  • changed ndk api level to latest

As i think those two problems might be related i put both in this question,
i hope s.o. here can give me a hint on what i might have done wrong.