Lunchbox for dynamo 2.x

Hi everyone,
I’ve actually come back to dynamo after a really long time and a lot seems to have changed here.
I got around to updating dynamo to its latest release and wanted to start working in it agin but ened up hitting a snag:
Lunchbox runs into an error whilst installing using the package installer.

The error reads there was a bad read on the Accordion.math.core.dll

I tried installing it by downloading the zip file from the website and extracting it. Seems the file is corrupted?
I tried it again and ran itho the same error.Anyone else ran into a similar problem?

Any help would be appreciated.

I think this is related :

Seems like a number of us have this issue. No resolution in the post here too.

Any idea how the rest of us got around?