[TYPO3-shop] md5 hash fails with 2.5.1 download

[Johnny Peck]

Greetings,

	Last night I had everything in the shop system tt_products 2.5.1, table 
0.1.8, and fh_library 0.0.13 working amazing. Over 1,000 products in 
categories and displaying with design in css, etc. with TYPO3 4.0.3 and 
successfully connecting to PayPal just fine. Just now I go into the 
backend and begin working and check the frontend to find that absolutely 
nothing is generated for the pages that have products extensions as 
elements on them. No source, or typo3 errors, just a completely blank 
page. At one point I had a 'page is being generated message' that never 
changed. This is very surprising to me. I am using PHP 5.2.0-1. So after 
this happened I downgrade to TYPO3 4.0.2 since that was the latest 
change to the system. Same thing happens. So I uninstall the products 
extension and various components that go with it and all the pages are 
displaying fine, of course without any products anymore. I delete the 
files for tt_products ext and go to extension manager to download again 
and I recieve this message:

Error: The datatransfer did not succeed. Error: MD5 hash of downloaded 
file not as expected:
f89468586b971324b178e6d3cd133a0b != 4706f9f74755f74ac6746e580f2cb421

I download manually from typo3.org and install it, still it no longer 
works at all. Please, we were just about to launch this weekend and now 
this happens!! Any Ideas!!

Thank you.

Johnny