I have the same problem. I have one computer running windows 8 which runs with no problems using EditorNew.exe
I have a second computer running windows 8.1. Second computer has the same problem stated above. EditorNew will not work, get the same message about compatibility. As a lark I reinstalled dbpro from 5.4 (my original purchase) to 7.1-results were the same.
tried 5.4 to 7.2 same result. Reinstalled 5.4 to 7.3 same result.
Continued trying all of the reinstall versions in this manner thru 7.7 same result.
If you want to run dbpro in windows 8.1 it appears the only editor that works is EditorU73.exe which does not use the Senergy.cfg file but uses the Editor.ini file. This is not the editor I want to use but will do until EditorNew is fixed.
Good luck guys!!
Operating System: (Windows 8 64 bit) Processor: (AMD FX-6200 Six-core - 3.80 GHz) Memory: (10GB) Display Adapter

AMD Radeon HD 7570)