Migration Guide : Migrating from Version 4.5 : Server applications using .mpr files
Server applications using .mpr files
VA Smalltalk server applications no longer need message and pool repository (.mpr) files unless the strings in the applications are translated.
If your server application no longer needs .mpr files, you should regenerate abtInternals in the server application. (From the Parts menu of the Organizer, select Generate > Runtime code.)
 
Last modified date: 07/02/2019