Unrecognized XML in project preferences
From BOINC Wiki
These errors show in the task output and are caused by XML code for specific hardware that your system doesn't have.
Unrecognized XML in project preferences: nvidia_block_amount Skipping: 128 Skipping: /nvidia_block_amount
This can show up in results when your system doesn't have an Nvidia GPU. If it had, it would use these preferences.