Uninstalling Ancient Versions of RExcel and the R/Scilab (D)COM Server

If you have an ancient installation of RExcel (from the RAndFriends installer, the (D)COM package, or the RExcelInstaller package), you will need to uninstall the Excel Add-In and the (D)COM package before installing the newer version. Ancient means an RExcel older than 3.0.0. To find out: Open Excel and click on the RExcel > About RExcel menu item. If the version is 3.0.0 or larger, then you do not have to do the uninstall step.

If you determine that you must uninstall the ancient version,

  1. For Excel 2003 and earlier (with the Add-In installed), start Excel and go to Tools > Add-Ins and uncheck the checkbox next to the entry RExcel. Close Excel.
  2. For Excel 2007 (with the Add-In installed), start Excel and go to Office Button > Excel Options > Add-Ins > Go… and uncheck the checkbox next to the entry RExcel2007. Close Excel.
  3. Remove old programs using Control Panel.
    • Open the Windows XP Add or Remove Programs window with Start > Control Panel > Add or Remove Programs
    • Open the Windows Vista Programs and Features window with Start > Control Panel > Programs and Features > Installed Programs
    • Remove any of the following:
      • RDACCSD
      • (D)COM Server
      • R/Scilab…

This completes the uninstall. After this, you can install the current version of RAndFriends.

Machines with Multiple Users

It is possible that a user other than the Administrator will receive conflict messages about earlier versions of RExcel even after a correct uninstallation of the older version and installation of the new version. The repair for each user so affected is the following:

  1. For Excel 2003 and earlier (with the Add-In installed), start Excel and go to Tools > Add-Ins and uncheck the checkbox next to any of the entries with RExcel as the beginning part of the name and also any entries associated with a directory of the form c:/Program Files/R/(D)COM…. It will tell you it can't find the ones that are no longer present and offer to remove them from the list. Accept the offer. Then check the RExcel entry that is still there. Close Excel.
  2. For Excel 2007 (with the Add-In installed), start Excel and go to Office Button > Excel Options > Add-Ins > Go… and uncheck the checkbox next to any of the entries with RExcel as the beginning part of the name and also any entries associated with a directory of the form c:/Program Files/R/(D)COM…. It will tell you it can't find the ones that are no longer present and offer to remove them from the list. Accept the offer. Then check the RExcel2007 entry that is still there. Close Excel.

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