Diagnosis
You have tried to export objects as ADW files. The data models andentity types to be exported must be previously marked.

Procedure
Mark the data models and entity types which you want to export byputting the cursor on the chosen nodes and press one of the twopushbuttons described below:
Sel./Desel. nodes
The chosen nodes are marked.
Sel./Desel. sub-tree
This marks the chosen nodes including the lower-level sub-trees.
If you want to export a data model with all its entity types and datamodels, position the cursor on the desired data model and press the"Sel./Desel. sub-tree" key, and then choose "ADW Export".