Originally Posted by Chuck S
I dont use htaccess or mod rewrite in the code so it would have to be something relative to your server it would appear and would make sense since your getting a server error.
There is no code difference whether its a new bid or another bid.
So you need more info from your host on what leads them to that conclusion. try removing any htaccess files you have on your server since thats what they are saying it is. I have already tested the default code so feel free to see what I mean test bidding - PhotoPost Classifieds
Your listing does not appear to be an auction as far as I can tell.
This is really odd as if there is no difference in the code for a new 1st bid or a consecutive another bid, why then would it return a 'Internal Server Error' everytime only on the 1st bids? That would lead me to believe that something indeed has to be different somewhere for the 1st bid as opposed to the 2nd or consecutive bids.
I am on the phone with my host again now to see if I can get further, otherwise I will use the contact us you suggested so you can login to my host and see.