Unfortunately RCU assumes its members have current or near current versions of the software it uses. Flash is one of those programs that is very common on the internet and therefore RCU assumes its members are up to date or at least within a couple latest versions.

This is likely the problem. Update your version of Flash and it shouldn't be a problem for you any more. I'm sorry to say, there's not much we can if your ISP gives you fits downloading updated software needed to browse the web.