During working with plugin registration 2015 I faced some issues. Here are those with resolution
Tool throws an error that ” Assembly file name () is in invalid format. Only file name is allowed.” during creating a new step.
Resolution for this is, go to DB and look for ‘PluginAssemblyBase’, in this table just update ‘path’ column with only actual assembly / DLL name. It will work like charm Or simply work with 2011 registration tool, it wont throw any error.
You can not see ‘Register Plugin’ button if you have bit smaller screen, for this I don’t found any proper solution but there is workaround is click on log text area and hit tab button, then hit enter. Or Simply use 2011 Reg. tool