Xerces error in Oxygen v10 but not v9

[maglid]

When I open one of several XML files in Oxygen v10 I get this error:

F [Xerces] Invalid byte 1 of 1-byte UTF-8 sequence.

I see nothing in the files that's wrong. If I open the same files in Oxygen version 9 there are no errors.

Any ideas? Thanks.

[maglid]

Never mind, I figured it out. The .xsd schema file that validates that doctype was corrupted and the error was coming from the .xsd file, not the XML file I had open. When I replaced it with a clean .xsd file, the problem went away. Thanks anyway!