SharePoint 2010 debugging

In order to enable debugging in SharePoint 2010 we need to made a few changes to the web.config file.

Replace

<SafeMode MaxControls="200" CallStack="false" DirectFileDependencies="10"TotalFileDependencies="50" AllowPageLevelTrace="false">

with

<SafeMode MaxControls="200" CallStack="true" DirectFileDependencies="10"TotalFileDependencies="50" AllowPageLevelTrace="false">

Replace

<customErrors mode="On" />

with

<customErrors mode="Off" />

Replace

<compilation batch="false" debug="false">

with

<compilation batch="false" debug="true">

This will turn an exception looking like this

into this