Are you sure that it is nothing to do with aproject properies that you are setting before calling aproject.build ?
What if you omit all of them and call build after aproject = _vfp.Projects[1] line?
What if instead of _vfp.Projects you use plain build exe command?


>No. the point is that everything works fine manually but fails programatically.
>
>
>>>Function argument, value, or type is invalid
>>>
>>>>>project that works fine to build interactively fails using BUILD EXE or the prject.build method. I cannot find this anywhere, but I am wondering if "errors" like array not found could be the cause,.
>>>>>
>>>>>It does not seem likely or logical, as the user presses ignore all, and the errors are hamless. but I cannot figure out the issue. The build attempt returns .f. and creatss a small stub .exe. Here is typical code, in which to all apperances it works -- there is no discernable difference in the time or processing apperance between the interactive build and the programmatic build.
>>>>>
>>>>>MODIFY PROJECT foo1 nowait
>>>>> aproject = _vfp.Projects[1]
>>>>> aproject.versionnumber = blah
>>>>> aproject.versioncompany = blah
>>>>> aproject.versionproduct = blah
>>>>> aproject.versioncopyright = blah
>>>>>
>>>>> y = JUSTSTEM(aproject.name) + ".exe"
>>>>> z = aproject.build(y, 3 , .f. , .f.) && filename, type, rebuildall, showerrors
>>>>> aproject.close:
>>>>
>>>>
>>>>If you use aerror(), is there any error reported?
>>
>>Then try to open the project and rebuild it manually and with "recompile all files" option. Will you get the same error?