Dtexecui.exe

When I try to run a .dtsx file or even the Dtexecui.exe I get following error:System.IO.FileNotFoundException.

Thanks

Bill

How are you running to dtsx?

At what stage of using dtexecui do you get the error?

Does it say what file cannot be found?

Is SSIS installed correctly on that machine? An open question, but do you think it is?