WebGL and XML errors

I'm using the latest bjs alpha, a few old errors disappeared (fixed I guess), and new ones appeared. These are internal bjs errors that are not related to my code as far as I can tell.

1)

Quote

Error: WebGL: texImage2D: Conversion requires pixel reformatting.

I don't know what this is related to.

2)

Quote

XML Parsing Error: not well-formed
Location: myFile.babylon
Line Number 1, Column 1:

This error is logged for each .babylon file I'm loading.

Why am I getting an XML parsing error on a .babylon file written in JSON format?