[root@testmachine1 Downloads]# yum install openproject*
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Install Process
Resolving Dependencies
—> Running transaction check
—-> Package openproject-ce.x86_64 0:4.1.1-1432714350.f73fec5.centos6 will be installed
—> Processing Dependency: dialog for package: openproject-ce-4.1.1-1432714350.f73fec5.centos6.x86_64
—> Finished Dependency Resolution
Error: Package: openproject-ce-4.1.1-1432714350.f73fec5.centos6.x86_64 (pkgr-openproject-community)
Requires: dialog
You could try using —skip-broken to work around the problem