If you are running Windows it could be in the AutoRun settings and with LR 5 there is a setting to auto open LR when it detects a camera or memory card.
For some reason LR 6 does not overwrite that setting and basically even if you set LR CC/6 do do that it doesn't. I'm not sure why it doesn't as I never allow this to happen with any version of LR or anything else. I have all the AutoRun features turned off.
If you are on a Mac I'm not sure. But again the Auto start setting in LR CC/6 doesn't work. Or so I have read.
Ok thanks. I actually am on a Mac and I don't have auto-run set to open LR. I do remember setting it up somewhere to download images into LR instead of other options and that's the issue I'm trying to figure out. No worries. I'll keep digging and am sure will figure it out at some point. Thanks for your help.
Thanks Andrew but I had already unchecked the import dialogue you suggested. I DID however finally figure it out! I had to go into my 'Image Capture' app and change the destination of where I wanted to import my images.