If the engine is installed without the Debug Symbols, packaging for Shipping will fail due to the missing files. While I believe this is expected for Development, it shouldn't occur with shipping.
Working in: 4.10.2-2818068+++depot+UE4-Releases+4.10
Broken in: 4.11.0-2858478+++UE4+Release-4.11
1. Install the engine without debug symbols (This can be done through the launcher by selecting 'Options' from the drop down beside "Launch" or "Install" and un-checking the Debug Symbols selection)
2. Create a new project in this engine version
3. Attempt to package for the Shipping configuration for Windows 64-bit
Result: Packaging fails due to the missing debug files
Expected: Packaging for the Shipping configuration should work as it shouldn't require debugging
Head over to the existing Questions & Answers thread and let us know what's up.