I think the 'What are the risks?' link should go on the download page instead. I understand that being up-front with risks shows credibility, however based on my experience with conversion funnels, the button in this position will have negative effects that outweigh this:
Most people won't click through to the risks, and will be left feeling a certain amount of uneasiness (depending on the person, ranging from no uneasiness to complete paranoia), leading them to either not click through to the 'Create Account' button, or to decrease download conversion rate on the next page.
We can infer that if people do click through to see the risks, that means the risks are important to them on some level. They will either read it or they won't.
If they do read it, this is the best possible outcome for somebody who clicks through to the risks link- from here they can make their own informed decision and know a little more about how BitShares works. However, they still need to exit the modal, and click through to the account page, increasing the number of steps for conversion. Maybe a 'I understand the risks, continue to create my account' button would help here. It's also important to consider that someone who is totally unfamiliar with the BitAssets may not understand the risks at all, leading to confusion, thus leaving the site.
If they don't read the text, this means that despite the risks being important to them, their time and energy to inform themselves is worth more to them. From here they will probably just leave. The only way to address this problem directly would be to make the risks more brief, but I think the quality of the content would suffer from this, and would not make much difference anyway.
In its current state, it's like the website welcomes the user at the front desk, then says,
"Create an account with us! Want to know why it's risky? No? Ok, suit yourself. Follow me."
or
"Create an account with us! Want to know why it's risky? Yes? Ok, here's a sheet of paper loaded with content you probably won't understand, which you can take to that chair over there to read. You'll have to come back and ask me again if you want to create an account."
When it could be,
"Create an account with us! Yes? Follow me."
From here, the prospective customer is making a small commitment. Small commitments are important, because they greatly reduce the probability of bailing in a later step. (As a related aside: I once completed a comprehensive IQ test that took over an hour to complete. At the very end, they said I needed to pay $5 to see the results. Even though I felt it was a dirty trick, I paid, as the value of the time committed combined with the value of knowing the result was worth more than $5 to me, something which was already demonstrated by me making it all the way through the test. This is a dramatic example, but a similar principle applies here.)
The download links to the client should be inline in the step-by-step guide for creating an account, and the risks link should be below them in small text:
By downloading the client above, I understand the risks of downloading open-source cryptocurrency software.Which would then open the modal.