I don't use Vsta myself, but lets see if I remember some from tech support for a friend

First uninstall Limewire

Then go to Control panel -> folder options and choose to display hidden folders and system folders and not hide known extensions

Search for lime and choose advanced search. Delete any folder that has to do with Limewire. Look at the path to make sure you don't delete something else.

Maybe search for incomplete also as you should find the incomplete folder with all those 2500 files. Delete it.

Reinstall Limewire.

No guarantees. As I said this is from memory.