Here is the question:  
https://meta.stackoverflow.com/questions/51812/the-api-sandbox

Here is the API URL:  
http://api.meta.stackoverflow.com/1.1/questions/51812/timeline?pagesize=100?page=2

Here is the error:  
<pre>
<b>code:</b> 500
<b>message:</b> "A generic error has occurred on the server; developers have been notified."
</pre>