-RO causes an error

[Dennis Malen]

I am using a menu line with the following:

/appl/fp/rclerk msx -s7 -RO

I get the following error:

*** A System Error Has Occurred ***            
/appl/filepro/msx.atty/index.A: Bad file number

In auto processing I am looking up the file msx.atty.

If I remove the -RO everything works fine.

What am I doing wrong?

Dennis Malen