What To Do? A DLL is not registered, you may register it manually

• From the desktop, on the taskbar, select Start | Run | Type: cmd.exe | Press Return,
• For Windows Vista and later, the command prompt must be run as 'an administrator'. On Windows 8 (for example), go to the Start screen, type 'cmd' to find the app, right-click the returned app and select 'Run as administrator' at the bottom of the screen.
  
• a command prompt is opened.
  
• to register the missing dll, type :
• regsvr32 "<WINDEV forder>\Programs\wdaidex.dll" if 32-bit editor,
• regsvr32 "<WINDEV forder>\Programs\wdaidex64.dll" if 64-bit editor.