This is actually the pro forum rather than the freeware soapui forum so id suggest posting in the correct forum.
Can you restore to point before you had problems?
If not and if you have a partial install, id delete any eviware/smartbear directories in the program files, as well as your user profile (there may be hidden directories inyour profile or programdata directories too).
Id then delete any eviware/smartbear keys in your registry also.
Id then run ccleaner to check for orphaned entries in the registry.
Hopefully at this your systems back to good allowing for a fresh install of soapui.
Some of the other forum members might have some alternative thoughts but this is what id do.
if this helped answer the post, could you please mark it as 'solved'? Also if you consider whether the title of your post is relevant? Perhaps if the post is solved, it might make sense to update the Subject header field of the post to something more descriptive? This will help people when searching for problems. Ta