Jenssperro: Based on the first few errors, it looks as if you are using a template that does not have the same basic elements as the default subSilver. To install Store MOD, you're going to have to manually update the appropriate template files.
Based on the last few errors, it appears that Cash MOD is not installed. If you don't have it installed, then you should check the installation steps on page 1 of this thread.
I still can not get this to work, in the admin it is still just wanting me to install. Is there a way to remove the installer from the admin files ?
I've sent you a PM. Please check it.