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Your debug report shows an error at line 1730, which is 5 lines more than the file should have. I think that by editing and saving the file on the host, you have corrected the line break error that previously existed, because the host text editor (Plesk, CPanel etc.) will do this automatically in a similar way to uploading the file in ascii mode.
You can leave the line in if you are certain that everything works, but as ghia points out, the page is invalid.
The line should really remain commented-out. It is an error that the developer has fixed.
My guess is that if you comment it out again (or delete it) the page will now load correctly.
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