Build debug not enough BP info

Migrated to 4.21. There are build errors for packaging Win64. Problem is the log messages are never specific enough no matter where I look.

I will get messages preceding with:

UATHelper: Packaging (Windows (64-bit)): LogStreamableManager: Error:

or errors about nodes not calculating through source.

But it never tells me which Blueprints, nodes or source files are failing. There’s no reference info provided so it makes debugging nearly impossible.

link text

what i’ve found:

Internal node error for expression: ' (((1894.000000 / 3931875.000000) * (*((pow(Wvar, 4))))) * (pow({E48C1587-4CAF-5406-3C97-7C91F75A01EB}, 5))) ' from Source: [2019.02.16-15.35.25:455][801]UATHelper: Packaging (Windows (64-bit)):   LogBlueprint: Error: [Compiler ] Cannot find a '*' function that takes the supplied param types, for expression: ' (((1894.000000 /
3931875.000000) * (*((pow(Wvar, 4))))) * (pow({E48C1587-4CAF-5406-3C97-7C91F75A01EB}, 5))) ' from Source: [2019.02.16-15.35.25:455][801]UATHelper: Packaging (Windows (64-bit)):   LogBlueprint: Error: [Compiler ] Failed to generate argument #1 for the '*' function, in the expression: ' (((1894.000000 / 3931875.000000) * (*((pow(Wvar, 4))))) * (pow({E48C1587-4CAF-5406-3C97-7C91F75A01EB}, 5))) ' from Source: [2019.02.16-15.35.25:456][801]UATHelper: Packaging (Windows (64-bit)):   LogBlueprint: Error: [Compiler ] No root node generated from the expression: ' (((1894.000000 /
3931875.000000) * (*((pow(Wvar, 4))))) * (pow({E48C1587-4CAF-5406-3C97-7C91F75A01EB}, 5))) ' from Source: [2019.02.16-15.35.25:456][801]UATHelper: Packaging (Windows (64-bit)):   LogBlueprint: Error: [Compiler ] Failed to generate full expression graph for: ' (((1894.000000 /
3931875.000000) * (*((pow(Wvar, 4))))) * (pow({E48C1587-4CAF-5406-3C97-7C91F75A01EB}, 5))) ' from Source: [2019.02.16-15.35.25:456][801]PackagingResults: Warning: Unable to load Generator_GeneratorGlass_DM with outer Package /Game/Meshes/Generator_GeneratorGlass_DM because its class does not exist

did you create this expression?

I did not create it. Problem is finding it is difficult because it doesn’t say where it’s coming from.

is error happens when no plugins active?

Yes it happens with plugins deactivated

hmm. are you tried to “fix files”? (when you click on asset there’s that function)