I'm getting a problem while install keepass2, Error "Package dependencies cannot be resolved" in ubuntu 14.04

Question

I'm getting a problem while install Keepass2 in ubuntu 14.04, getting this error

Package dependencies cannot be resolved
This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time.

Details

The following packages have unmet dependencies:

keepass2: Depends: mono-runtime (>= 3.0~) but it is not going to be installed
Depends: libmono-corlib4.5-cil (>= 3.2.8) but it is not going to be installed
Depends: libmono-system-drawing4.0-cil (>= 3.0.6) but it is not going to be installed
Depends: libmono-system-security4.0-cil (>= 1.0) but it is not going to be installed
Depends: libmono-system-windows-forms4.0-cil (>= 1.0) but it is not going to be installed
Depends: libmono-system-xml4.0-cil (>= 3.2.1) but it is not going to be installed
Depends: libmono-system4.0-cil (>= 3.2.8) but it is not going to be installed
Depends: libx11-6 (>= 2:1.6.0) but 2:1.6.2-1ubuntu2 is to be installed

Please help me guys to resolve this problem.

Answer 1

After installing Mono all the dependency related issues are resolved. I used this following command to install the Mono.

echo "deb http://download.mono-project.com/repo/ubuntu trusty main" | sudo tee /etc/apt/sources.list.d/mono-official.list
echo "deb http://download.mono-project.com/repo/ubuntu trusty main" | sudo tee /etc/apt/sources.list.d/mono-official.list
sudo apt-get update
sudo apt-get install mono-devel