I have SharePoint 2013 Installed with version '15.0.4420.1017' as per Steve Chen's Page the version I have is RTM. So in order to get my workflow working As guided by Yevgeniy I have to installed SP1 on top of this version.
When I try to run and install the 'officeserversp2013-kb2880552-fullfile-x64-en-us.exe' file. I get the below given error message.
Any idea how to get rid of this and install the SP1? I need to get the Workflow working.
Apparently I have already installed SP1 but the version still remains the old. See the screen shot.
Performed a configuration cache cleanup via The Cache Remover - CodePlex Tool. Still no luck. The version still remains '15.0.4420.1017'