It's usually 1 of 2 causes that will give you a blank result on Open Site Explorer (OSE).
1. the site is so new, or the newly built links to the site are so new that OSE has not had time to crawl and display those links in their most recent index update. SEOmoz updates the index in OSE once every 30-40 days.
2. all of the links pointing to your sites have not been crawled by OSE. OSE crawls a big portion of the Internet, but it does not crawl 100% of sites out there. So, if we are talking about a site with only a small handful of links, it's quite possible that OSE just doesn't have the crawl depth to pick them up.
Scenario 1 is the most probable case. I looked at the whois information for the first URL you provided, and the domain was registered in December. So, if your site has been active for less than a couple months, I would suspect your link building activities trailed that by several weeks. I would suggest giving it more time for any links you've built (or paid to have built) will start to show up.
In the meantime, you can work on establishing your on-page SEO elements. Have you created a campaign in the SEOmoz tools yet? That is a great start. Good luck!