Sideloaded Apps Don't Show Up or Disappear

I've started sideloading apps onto my Playbook using DDPB and it's a fast and simple process, but I've noticed a few odd things happen and wanted to see if anyone had advice for me. In some instances, the app doesn't show up on my home page, even though I got confirmation that it loaded correctly. One example is Fllixter. It never showed up on my home page, so I used Ghost Commander File Manager and was able to locate the app. I am able to launch the app from this program, but it's obviously not ideal. Any thoughts or ideas on how I can get the app to show up on my home page?
Another issue I've had is a sideloaded app disappearing all together. I tried to organize my apps and in the process, the screen went black while I was trying to drag and drop an app into a folder. I restarted my Playbook and the app was gone. My first thought was to reinstall the app using DDPB, I did that, received a confirmation, but the app did not show up. I also can't find it using Ghost Commander. Any thoughts on where this app went or how I can get it sideloaded back on to my Playbook?