I have been successfully using eStore since November 2009. On Friday, my server crashed and the server owner had to restore from a back up that was only several hours old. Fortunately I lost nothing and all seemed fine until a customer tried to make a purchase on Saturday. The products will still load into the cart but when you click on Check Out with Paypal, you now get a "page not found" error. The address line, at the time the error occurs, reads:
I checked and that file is located there.
I've not changed any settings and my store was working fine right up until the server crashed.
I tried reinstalling my eStore but that didn't change things. I'm still on version 2.6.7. Yesterday I applied for the update using the same email address I used when I purchased eStore and I even submitted my original Paypal Transaction number from when I paid for eStore, but I've not received anything back. Also, I'm using WP 3.3.0.
If you want to test the error for yourself, you can put a video into the cart using this link:
http://www.iloveknk.com/products-page-2/videos-to-purchase/
Also... based on reading a similar thread here... I do NOT have the box checked for Automatic Redirection to the Checkout Page in the Settings.
Thanks in advance!
Sandy McCauley
http://www.iloveknk.com