Forum OpenACS Q&A: Response to Problem: SilentPost back from Ewebcart
I'm a little confused (early morning, bad memory, two kids needing breakfast). I should think that the 302 has nothing to do with your nsvhr setup. Also, if you're giving it the port directly, that again suggests it's not nsvhr.
Regardless, I would recommend upgrading to 3.3 and the new nsvhr for a variety of reasons.
I'll be out until about noon pacific time, but you might try using util_httppost or something to post some binary to http://www.theashergroup.com/junk/test.tcl. Name the variable test and it should spit the results back to you. It may or may not work with binary, so if it doesn't work, the results are just inconclusive.