EV FSA http browsing problems

Hi All. We get the following error after (10.0.1 -> 10.0.4) upgrade when browsing share in file server with http. with a workstation the error message is more vague. Only archived files will not open. Everything else works fine.

We needed to create simple http browsing option on IIS because the folder navigation over UNC path names is slow behind slow connections. Latencies and packet loss affects less with http.

Any ideas? Cheers.