Hey, i posted this solution on a different thread but i'll also post here for visibility. System is windows 7 54 bit.
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Hey everyone who's reading this thread and still finding a solution for this, I just recently solved it on my end after 2 days of google searching.
1) Uninstall hamachi and remove from program file x86 / network adapter from device manager if it's still there.
2) Remove any other vpn's you have (I did this just in case).
3) GET A DIFFERENT INSTALLER FILE THAT'S NOT FROM HAMACHI GUEST HOMEPAGE.
Why? I have no clue, it seems the installer file they have up is borked or something. I got used a different version of the installer, 2.2.0.377.
4) Proceed download as usual, then that annoying yellow triangle should be gone. At least it did for me.