I recently got an error compiling a pdf in the LaTeX editor, Kile.
As per the title, it mentioned an exit code of 70. What happened with this error is that I attempted to compile my document and the console mentioned that there were: 0 errors, x warnings and y badboxes, etc. However, upon trying to view the document a 'no pdf found'-like message appeared. Odd... I had just added 25 pdfs as graphics into the document, so perhaps I had overloaded it?
Actually, the reason for this errors is because one pdf file I had imported was misspelled, so it couldn't add it and spat out the exit code 70. The strange thing was that it erased my pdf output and only after scrolling up in my console was the error message visible. Until I had scrolled up, there was no indication an error had occurred aside from not being able to view the pdf.
If anyone gets this error, check your spelling first!