Class Not Loading / Looking for "Pear.php"

Emailed Gilbert about this issue but found a fix for the problem shortly afterwards.

Was getting this issue only on some posts, not all of them:
![](https://i.cloudup.com/xYUs_GvZ-o-3000x3000.png)

What the fix does is falls back to the "normal" Markdown class rather than the Extra class. This might be ok as the plugin isn't doing anything complex in terms of the Markdown tags. A quick flick through my blog, all the Markdown code is rendering fine after the quick fix.

Not sure if this is submitted as an issue often or even before but was basically blanking my posts that had this issue, only way to get errors was the debug var in wp-config.php to be turned on.