Quick (annoying) thing. Whilst deploying a solution, you may see this error:

Error occurred in deployment step ‘Activate Features’: Key cannot be null. Parameter name: Key

This is unhelpfully connected to your Content Type definitions where you have FieldRefs and you’re closing them with the long tag, as opposed to the short tag, i.e.,

<FieldRef ID=”…”></FieldRef>

replace it with this to fix:

<FieldRef ID=”…” />

Thanks to Dhiraj.

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• Error occurred in deployment step ‘Activate Features’: Invalid field name.

Tags: deployment, feature, key, parameter cannot be null, SharePoint, tip

This entry was posted on Friday, August 5th, 2011 at 15:43 and is filed under SharePoint. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.