Directory Opus exe deleted

I opened an e-mail I should not have and had to have my computer cleaned. When it came back the shortcut to Directory Opus was gone from the desktop. I did a search and found the following:

	DOpusinsatall.exe* 				application
	Directory Opus (2) 				short cut
	DOpusinsatall(1).exe* 			application (3 copies 2 as below, + 1 in downloads) 
	DOpusinsatall(2).exe* 			application (3 copies 2 as below, + 1 in downloads)   
	ppcRsopUserSchema.mof			MOF File
	https+++resource.dopus.com*		folder
	Directory Opus					folder
	ppcRsopUserSchema.mof			MOF File (may not be Directory Opus a file)
	Directory Opus Program Certificate*	OPUSCERT File (3 copies 2 as below, + 1 in downloads) 

A series of wow64 and amd64 windows opusdecoder folders, MANIFEST Files, and .dll files
I assume I should have found an exe for Directory Opus but did not. How do I get back to the latest stable version?

You can download it from http://www.gpsoft.com.au.