Thank you, Isham.  The following .ini files were present in C:\ProWin24\32bit\ and I copied into C:\ProWin24\32bit\Updater\ folder: PrdVersion.ini, ProPrd24.ini and ProPrdList24.ini.  The following .ini files were not present in either of the two folders: Categories.ini and ProWin24.ini.  I tried launching ProSeriesUpdaterStub.exe after copying the above three .ini files into the Updater folder but nothing happened.  I then tried launching the file protax24.exe under C:\ProWin24\32bit\ folder but got the message "ProSeries is unable to access or locate the 'Common' files folder: Empty."  How can I get the Categories.ini and ProWin24.ini files on my computer?