When you start SAS, the following messages might appear in the Log
window:

   NOTE: Unable to open SASUSER.REGSTRY. WORK.REGSTRY will be opened
         instead.
   NOTE: All registry changes will be lost at the end of the session.
   NOTE: This SAS session is using a registry in WORK.  All changes
         will be lost at the end of this session.

This note is caused by opening more than one SAS session, setting the
-RSASUSER option, or using a corrupt regstry.sas7bitm file.

To determine the cause do the following:
   1. Close all SAS sessions.
   2. Open one SAS session.
   3. If the error is gone, then the problem was more than one
      SAS session open.
   4. If the error persists, then submit the following SAS code:

         proc options option=rsasuser; run;

   5. Check the log for results. If this entry appears in the Log
      window

         RSASUSER      Open SASUSER library as READONLY

      then the -RSASUSER has been set. This option makes the SASUSER
      library read-only so that more than one SAS session can
      use any display manager customizations and have access to
      any automatic libname definitions stored in the regstry.sas7bitm
      file. If you do not want this set, then remove the -RSASUSER
      option from the SAS config file (sasv8.cfg or sasv9.cfg file)
      or from the SAS startup command. If you do want this option
      set, then you can disregard the Notes in the log. Yet, be
      aware that any customizations will not be saved.

      If this entry appears in the Log window:

         NORSASUSER     Do not open SASUSER library as READONLY

      then your regstry.sas7bitm file is probably corrupted.
   6. If your regstry.sas7bitm file is corrupted, you can rename the
      existing file and SAS generates a new one at startup with
      the default settings. To determine the location of the
      regstry.sas7bitm file do the following:

         a. In the SAS Explorer window, double-click on Libraries.
         b. Right-click on SASUSER, and choose Properties.
         c. Beside General Properties, click the down arrow.
         d. The drive letter and directories appear in the pull-down
            window.

      To rename the file, do the following:
         a. Exit all SAS sessions.
         b. Through Windows Explorer, go to your SASUSER directory as
            determined above.
         c. Rename regstry.sas7bitm to regstry.old.
            If a dialog box appears saying that the file will become
            unusable, click OK.
         d. Restart SAS.

Operating System and Release Information