I tried it too with all my Browsers. Chrome, IE and Firefox. The stupid thing was.. Most Downloads worked fine,  but in one product with 3 zips 1 worked, the others not And always on the same part ist stopped loading. I used all Browsers, rbooted my PC  had the corrupt files, some endet with zip.html - deleting the .html didn´t help nothing helped since I cleared all the caches and they resetted the Purchases

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2837433

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2836502

 

here are the helping threads of mine