Checking for file delete/create results

[DavidMacLean]

Building project step 'Create Release directory'...
A subdirectory or file C:\Foo\Bar already exists.

Building project step 'Empty output directory'...
File C:\Foo\Bar\*.BPL' does not exists


The above results using a RUN PROGRAM action, eg

%DOSCMD% CALL DEL %RELEASEDIR%\*.BPL


It is not an error if the file to be deleted is already deleted. Similarly, it is not an error if the directory to be created already exists.

Yet if I shut off "fail on errors", what happens when there is a real error?

Any advice...? Please and thank you.