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When compiling a project in Visual Studio, the error message “the exec task needs a command to execute” appears, with no line number. What does this error mean?
(Apologies for asking and answering my own question; I just found an answer as I was writing this. Have made it community wiki, so as not to offend.)
Ken Egozi has found an answer.
The message is caused by stray newline characters in pre or post build commands.