Hi,
I want to test UWP for XBOXONE but I experience various problems.
This test is to see if it is possible to develop some games on UWP with UE with a Cross-Buy support for XboxOne.
-> But I am unable to make a simple 3D scene running on XB1.
The game perfectly run to Desktop with UE launcher button.
-> I cannot add the xboxone console (its a developer xb1) as device in the UE device manager for UWP.
-> So I decided to make a package: it builds and deploys without problem but the game crash just after launch screen on XB1.
→ Then I expected that it may a sign/certificate problem. So I regenerated a new one by command line but now I cannot package anymore… 
MakeAppx : error: Error info: error C00CE169: App manifest validation error: The app manifest must be valid as per schema: Line 3, Column 55, Reason: 'MyCompany' '(CN|L|O|OU|E|C|S|STREET|T|G|I|SN|DC|SERIALNUMBER|Description|PostalCode|POBox|Phone|X21Address|dnQualifier|(OID\.(0|[1-9][0-9]*)(\.(0|[1-9][0-9]*))+))=((^,+="<>#;])+|".*")(, ((CN|L|O|OU|E|C|S|STREET|T|G|I|SN|DC|SERIALNUMBER|Description|PostalCode|POBox|Phone|X21Address|dnQualifier|(OID\.(0|[1-9][0-9]*)(\.(0|[1-9][0-9]*))+))=((^,+="<>#;])+|".*")))*' 'pattern'
'MyCompany' 'Publisher'
Something is missing in the app manifest … but it is generated by UE, isn’t it?
Any help very apreciated 