Unable to draw entities of more than 25 as the tool has a limitation. Only 25 DDL Generation Scripts are created; anything over that is not included.
In TDM | 'MODEL' menu | click on 'MODEL PROPERTIES' | 'STATISTICS' tab | the tab shows the limits of each object.
1) Limitation of the Freeware version.
2) Corrupted Model file.
The Freeware version only allows users to save models with less than 25 entities. That's the limitation of the Freeware version. Please use the Trial version or the Commercial licensed version to avoid the 25 entity limitation.