Best is to update both applications, not just for functionality but also for security.
Check if your CPU supports the SSE2 instruction set.
You can look up the specifications at the manufacturers website or use something like CPU-Z.
Did you try as I suggested ?
Well, I checked the system information concerning the CPU for the computer that the problem is on & said computer uses an AMD Athlon CPU. So, I went to AMD's website and, as it turns out, there is NO listing for the AMD Athlon, only the newer AMD CPUs.
So, I then did a Google search to find out if the AMD Athlon supports SSE2. Through that search, I came upon
this thread on a message board. According to the
first post, under "AMD", then "SSE2 CPUs", the listing does NOT include the AMD Athlon.
So, I am taking that to then mean that the AMD Athlon CPU in the problem computer does indeed NOT support SSE2, meaning Asyn's post seems to be correct.
Now, I don't know if it means anything, but within at least the last couple years or so, when I've attempted to install the newest versions of certain programs (Skype, MalwareBytes Anti-malware, Adobe Flash Player, etc.), right after the installer program gets going, it crashes.
Now, I have since uninstalled Skype from the problem computer, as I've installed it on another, faster computer I use; but, the only way I was able to use Skype on the problem computer was to install an older version of it, then disable Skype Updater in the Windows Services explorer window, as well as turning off automatic updates within the program itself.
As far as MBAM, I had to install an older version of that as well, then, as soon as its update service showed up in the Windows Services explorer window, I disabled that.
As far as Flash Player, I had to end up using an offline installer to place that program on the problem computer.