An error was encountered while upgrading the dbschema file to the most recent version. This usually means the original dbschema ...

An error was encountered while upgrading the dbschema file to the most recent version.  This usually means the original dbschema file is badly formed - possibly due to unprintable (and therefore invisible) characters within a tag - and may be the result of hand-editing the dbschema file.  The error was: {0}