Dmitry,

At the time when application is built, the project manager doesn't know what aSysData is and how to resolve it. Try to add to the Init

EXTERNAL ARRAY aSysData
* If above doesn't work, add
IF .F.
  DIMENSION aSysData[1]
ENDIF

>When I compile and build an application, I get the following error:
>
>

>Program d:\myapp\programs\appsetup.prg has the following errors:
>    Unknown ASYSDATA - Undefined
>

>
>The aSysdata is an array passed by reference to the INIT method of the class in appsetup.prg. The code is basically like this:
>
>

>Procedure INIT
>LPARAMETER aSysData
>

>
>The compiler error I get (above) does not really stop program from working. But I was wondering, why do I get this error and perhaps how to get rid of it?
>
>TIA.