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Fix a plug-in-related PDF printing issue in Safari

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After upgrading to Mavericks, I ran into an issue where I couldn’t print from a site that used a Silverlight-based Web app. In particular, when I tried to use ‘Open as PDF’ or ‘Save as PDF’ from the Print dialog box, instead of getting a nice PDF, I’d get bupkis. Zip. The big goose egg.
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It turns out that this is due to the new sandboxing rules that Apple implemented for Safari plug-ins. The feature is intended to keep you safe from security exploits that affect plug-ins, but it can result in unintended side effects—such as, in my case, not being able to print.
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After a lot of searching, I finally came across the solution, suggested by this post at Microsoft’s Developer Network (http://blogs.msdn.com/b/webapps/archive/2013/11/14/silverlight-safari-plugin-sandbox-prevents-your-silverlight-enabled-website-from-working.aspx). You can tell Safari to let you run certain plug-ins in “unsafe” mode; sounds scary, yes, but fortunately you can enable that mode on a plug-in by plug-in basis, and only for specific sites that you designate.
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<figure class="large ">(http://images.techhive.com/images/article/2014/01/plugin-unsafe-mode-100222069-large.png) <figcaption>
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Running a plug-in in unsafe mode can help fix problems created by sandboxing, but you should limit which sites get the privilege.
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