steve, I just posted a similar question. (Scroll down and you will see it on the first page: Trend Antivirus and Malwarebytes Incompatible?) When I loaded Trend it told me that it first needed to delete Malwarebytes. But after Trend was uploaded I reinstalled Malwarebytes and both programs seem to work just fine.

Luis I believe every safety program by the reputable vendors is safe and good. Have you really thought about those differences? For example I kill ants and centipedes indoors but not spiders, many kill spiders too. Who is right or wrong there? Just a different perspective on things. The real bad guys are taken care of by everyone, those lesser are measured by different standards in different safety programs. All the programs presumably know the bad guys and protect us from them but the difference comes in how those 'nuisance' type things are assessed. Some remove them others spend more time with the real threats. A few years ago the computer security firms declared that the bad guys are winning. They cannot create a fix for a virus not get designed anymore than we can clean up a spill on the kitchen floor that has not happened. I also believe all the security companies work together to identify threats and help keep us safe. With the volume of nasties created they can do nothing less. Over the years I have tried almost all free anti virus and malware programs, changing not because of discontent but just willing to try what the other guy has to offer. I use Microsoft Security Essentials only now. It is fully automatic which is nice and I only need the one program. Others find the need to add layer, again that is a personal opinion for all of us. MSE has been out about 2.5 years and I have had it since day one and never had an issue, I have confidence that will continue.

I like the new version. Have put it on several computers and had no problems. Perhaps try uninstalling it from control panel and then when all is done, run its cleanup uninstall tool. Restart computer before reinstalling it. Here is a link that might be useful: http://downloads.malwarebytes.org/file/mbam_clean

I think they took a day or so to reply to my query, too...but I have to remind myself that our internet traffic is sometimes much different from theirs. But...they always answer. In today's cyber world...that's a plus. And...as you discovered...they don't just shoot out a few directions and leave you hanging. They hold your hand if you need them. I was very impressed with their attitude. They have a support site, too, Judy. It should be linked at the Malwarebyte site I posted above. I haven't spent much time there but on one or two occasions I found an answer to a curious interaction between Win 7.1 and Malwarebytes. Anne