AcrobatUpd955_all_incr.mspを使用したところ下記のエラーメッセージが表示されました。
The upgrade patch cannot be installed by the Windows Installer service becasuse the program to be upgraded may be missing,or the upgrade patch may update
a diffrent version of the program.Verify that the program to be upgreaded exixts on your computer and that you have the corect upgrade patch.
何か問題があるのでしょうか？