Hello. This may get a bit lenghty, but, it's to let you know you're not alone. Also, hope fully, others might benefit from the issues I'm going to cover. First of all, my OS is Windows Me. I have the same problem with the "error code 4" message. To date, I have had all versions of spywareblaster since v2.6.1, and have never had a problem. I'm guessing within the last two weeks my v3.4 started bringing up the code 4 message. I went back and tried all other versions, and none would work, except for v2.6.1. It can't be updated, however, it's better than nothing. All versions produced the code 4 message. Next, I began receiving the "Windows Security Center" message, approximately every 10 minutes after I closed it. It always appeared in the middle of my screen. I called Microsoft and they said more or less, that this was not their message. They then directed me to a site: http://housecall.trenmicro.com, which apparently is an online spyware detection they use, that isn't Microsoft related. Now here is where it gets a little screwy. You mentioned an icon appearing in your taskbar. I was getting the same thing. And I will attempt to insert a picture of it in the body of this posting. If you don't see it, then I will place it in an attachment. Anyway, the icon began appearing at the same time as the Window's message, but, before I ran the "trendmicro" spyware detection. To make things a little more bizarre, the icon in the tray beside my clock, is identical to what "trendmicro" uses. Go figure. Since I ran the online utility, I've seen the Window's message one time in the last week. The other message and it's icon still appears by the clock, but not near as frequent. By the way, the icon by the clock, it's message says also, to click on the "baloon". To me, it looks like an armor shield, with an exclamation mark in the center of it. Two more things I'd like to mention. In my msconfiguration, in the startup tab, I have two new entries: "WareOut", and "KB891711". I don't have a clue where they came from. But for all the good it may do, I turned them off. The first one is in Program Files, and the other is in Windows System. And both are .EXE. I did have a similar problem with the Windows Media Player, that you mentioned; which I've got that problem fixed. If anyone has any suggestions on how to resolve this annoying crap, feel free to email me, and/or respond at this site. FYI, in addition to SpywareBlaster, I also use AD-Aware SE Personal, and Mcafee Anti-Virus and Firewall. *And this stuff still gets through*.