If during the installation of a workflow feature using InfoPath forms you receive a warning message in the form 'The assembly assmbl1.dll from form template templ1.xsn(urn:....) conflicts with a same named assembly in form template templ2.xsn(urn:....). ' the reason is that one of the Info Path forms being deployed contains in the .xsn file an assembly which has the same fully qualified name as one of the already deployed assemblies. One reason could be that the assembly version property of the code behind project of an InfoPath form is hardcoded and not dynamically generated and you install the second version of the form.