That's a good check list.

I would add two points:

Check the line endings (may not be appropriate in this case).
Check that the script you are testing _is really_ the one you think it is!

The last one caused me a lot of grief!

In reply to Re^2: Premature end of headers (ad naseum0 by wfsp
in thread Premature end of headers (ad naseum0 by Omega430

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