User Support & Resources - Invalid archive?

In this thread

http://www.ls1tech.com/forums/pcm-diagnostics-tuning/1166765-c-pressure-sensor-volts-vs-pressure.html

I attached a zip'd Excel file. People downloading it with MSIE get a munged
archive message (I guess the MSIE:WinZip chain) while Firefox works fine.
I uploaded once with FF and once with MSIE, the files are evidently the same
and same problem.

When I download it with FF, the zip opens just fine, but when I D/L with IE, it says it's a corrupt archive. No idea why, but I can't fathom it being a vBulletin issue.

As a temporary fix, try compressing with WinRAR (http://www.rarlab.com/download.htm).