I don't think you need to delete the fxp before compiling it - it will overwrite

Better use

do (xprg)

instead of

do &xprg

It takes care of the spaces


>You are right There was a line in a code which I managed to miss :)
>

>delete file *.fxp
>

>adding
>

>compile *.prg 
>

>resolved the issue. DO &xprg with extension .prg or without DO (forceext(xprg, '')) as you suggested doesn't make a difference then.
>
>>>A prg is not included in a project file.
>>>Is it supposed to work at all when exe is launched from command line ?
>>>It does work for exe build/run in IDE.
>>>
>>> do &xprg
>>>
>>>where xprg full path to prg file
>>>
>>>Set path to justpath(xprg)
>>>or
>>>cd justpath(xprg)
>>>
>>>don't help.
>>>
>>>The error :
>>>File 'xyz.prg' does not exist
>>
>>Michael,
>>
>>You have to compile it first
>>

>>compile (xprg)
>>do  (forceext(xprg, ''))
>>