I really don't want to throw this out here... but just in case someone else has a related issue...
I uninstalled the last beta and installed 1.4. Within an hour of that, I mounted a Macrium Reflect image to grab a file version I needed. After copying the file from my image, I attempted to dismount the image. Nothing happened. When I tried to repeat that I noticed that my OS (Win8.1 x64) was unresponsive. The mouse moved... but nothing I clicked, or keyboarded responded. I had to forcibly power off.
When I rebooted I arrived at the same place. My desktop loaded, but many of my tray icons were not loaded. I tried to bring up Task Manager, but again the mouse clicks did nothing. Again I forcibly powered off, and then booted into Macrium to reimage my machine.
This was not fun. Since I was unable to check Task Manager, Event Viewer, etc., I'm unsure what brought this on. I suspect OSA didn't like what Macrium was doing in the mount/dismount cycle... but I really don't know. I'm not of the posture to repeat this at this time, and it's possible that the OSA 1.4 install is unrelated. But I thought I'd share my experience if there is anyone running this combination that might be challenged to test this. FWIW, I had many of the advanced settings checked (none red, but several orange).