Workflow Expression Error: Left and Right argument types should match for comparison operationshttp://developers.de/blogs/damir_dobric/archive/2012/08/20/workflow-expression-error-left-and-right-argument-types-should-match-for-comparison-operations.aspxWhen building custom workflows in SharePoint or when building in general Workflows with WF 4.5, you might get following error: ”Left and Right argument types should match for comparison operations” Due the new C# Expression support, this error will happenenCommunityServer 2008 SP1 (Build: 30619.63)