When you upgrade to a new version of DataWindow Designer, your existing libraries need to be migrated to the new version.
Make sure PBLs are
writable
If you make copies of your libraries before you migrate to
a new version of DataWindow Designer, make sure that the libraries you will
migrate are writable.
The library that is created when you create a new project contains the default application object, which is required for migration. If you add other libraries to the project and delete the default application library, DataWindow Designer cannot migrate the other libraries in the project to the current version.
DataWindow Designer uses project (.dwp) files to manage libraries. The following sample has three libraries: lib1.pbl, lib2.pbl, and lib3.pbl. If you delete the library listed on the applib line, lib1.pbl, from the library list, you cannot migrate the project to the current version:
Save Format v3.0(19990112) appname "Default"; applib "lib1.pbl"; LibList "lib1.pbl;lib2.pbl;lib3.pbl"; type "DataWindow Designer";
A library must be in the current library list for you to migrate it.
To migrate libraries:
Select Migrate from the pop-up menu for the project in the System Tree.
The Migrate Application dialog box displays.
Click OK.
DataWindow Designer migrates all objects in the library to the current version.
