this one's really baffling me.. I can't get the icon overlays or the shell extensions to work with windows 8. Tried doing a full uninstall/reinstall, running in compatibility mode, unlinking and relinking my computer.. no dice. I tried opening a ticket with dropbox but they basically said go away and gave me a bunch of unhelpful links.
Running largely the same setup as when I had windows 7, except it's windows 8! I just disabled Clover, but I may try running explorer in compatibility mode for 7 or something.
Turns out you can't run explorer in compatibility mode ,_, running dropbox (and its installer) as admin + compat mode didn't help.
I'm having the same problem on a new Windows 8 computer. The dropbox shell extensions worked for me initially, but at some point in the last week they stopped - both icons and context menu items are gone. I've tried reinstalling and rebooting. The shell extensions DO work on a fresh user but that's not a solution for me. I've done a lot of customizing to windows in the last week but can't imagine what I did that would break Dropbox. My other shell extensions (eg Tortoise) still work correctly.
I checked in ShellExeView and see one context and several icon overlay extensions, all look correct:
Edit: I restored my UAC and ConsentPromptBehaviorAdmin settings to defaults on a hunch. I've gotten it into a state where the context shell extension works right after install, but stops working after I reboot for the first time. I suspect the problem might have something to do with dropbox's integration with the windows 8 store. Which is a hurdle for another day. :/
One thing I will say though is that the newest versions of OneDrive in windows 8.1 are pretty great. I love the way it manages online files. As far as I know its the only one that you can have "free up space" on the local drive but still keep the files synced online. This is great for my laptop that currently has a pretty small ssd in it. I can create tons of files, sync them, and then let skydrive delete the local files. They still show up in windows explorer like they were on my hard drive.
Only thing I wish they would do is lower the price. Google dropped a bomb when they made 1tb for only 1.99 a month. Skydrive is $50 a year for that(still cheap). However Skydrive is good enough that I don't mind paying more.