I'm having trouble locating up to date resources for this, so any help would be greatly appreciated. 

I have an Ubuntu VM on Virtualbox, and used the vboxmanage modifyhd command to increase the size of the VM. I booted into an Ubuntu live CD and was able see the new unallocated space in Gparted. I increased the size of the extended partition (sda2) and then after decrypting and deactivating the sd5 partition, I assigning all the unallocated space to it. 

When I try to apply the changes I get the following error: 

> 
> cryptsetup -v resize 'sda5\_crypt'
> 
> 
> command failed with code -1 (wrong or missing parameters)
> 
> 
> nothing to read on input
> 
> 
> 

Any idea what I'm doing wrong here? I'm running Gparted 0.33.0 which is the latest on apt.