I just tried replacing Oodle with Zlib. Left Kraken.
I worded it just like in IoStoreUtilities so uppercase Z the rest lower case
Packed fine and the project runs
Did another test replacing kraken with Zlib…also compiles fine. I’ll try a 3 x Zlib combo with materials next.
Edit: Ok so 3 x Zlib seems to fail during packing with ExitCode=-1073740940. Seems you can turn off “Use IO Store” in packing to mitigate this.
Trying a final repack => It was a success.
So you can set all 3 compressions to Zlib and turn of Use IO Store and it should pack ok.
If you want IO Store to work then the materials need to be set to the default compression.
Final note here is my engine version


