Blueprint bottom bar not appearing, 'Unable to process your request'

Blueprint bottom bar not appearing, 'Unable to process your request'

Hi,

We have Blueprints set up to help workflow, and to move tickets I use the blue bar on the bottom to follow the process but it isn't loading and instead I'm getting the 'Unable to process your request' error.

Please help? I can't move tickets to Open, On Hold etc without it.

Kat