I have a fresh install of Ubuntu.  I cannot get past the install error of:

The following packages have unmet dependencies: 
openproject : Depends: dialog but it is not installable 
E: Unable to correct problems, you have held broken packages. 

The latest install instructions I have used are here: https://packager.io/gh/opf/openproject-ce/builds/889/install/ubuntu-18.04

any ideas?

Hi Hoffmann,

Your issue is with the dialog package, and you need to get it from the universe repository.

I'm suspecting you haven't added the repository yet, so please try:

sudo add-apt-repository universe

Then you can just install dialog package using:

sudo apt-get install dialog

THEN you can try installing openproject again..

this worked perfectly!