Oovee EMD40series problem

A few weeks ago I cleaned up my TS2015 including Oovee emd40 series.I didn't delete anything of importance,when I went to re-download the 40 series the setup wizard is telling me that "Steamapps is an invalid app" please amend--download terminated...? I didn't delete anything that would affect the re-download,it worked fine before the minor cleanup,and have asked Oovee for help but nothing in response(their site is a little lame on help),any help would be helpful.
thank you
thank you