#4 Required parameter '-o ' was not specified

[Josh]

Have not been able to get away from this issue for a while; have tried different folders and re-typing the command, but I keep getting a:
*** Required parameter '-o' was not specified. ***

I'm using command:

java -jar "C:\SchemaSpy\schemaSpy.jar" -dp "C:\xxxx_4.0\xxx\" -t mssql -db xxxx2009SP1 -host localhost -port 1433 -u user123 -o "C:\SchemaSpy\user123_xxxx2009SP1_\"

Any ideas what needs to be changed? Thanks!