How to enable the add-on

Dear DevTeam,

I have purchased new addon (Multi Update Products) and placed the files in the admin folder accordingly, Please help how to enable and view the menu.

(Thread moved to add-ons and respective add-on)

Just Upload the vqmod .xml file and refresh page in admin. You will find it under Admin -> Catalog -> Multi Update
It's really strange, there's in  vQmods "Multi Update Products" but no such menu in Admin -> Catalog ->. Any other solution?
Are you on Windows or Linux? Look in data/errors.log if there are any errors.

Also try deleting the vqmod cache:
Thanks Tim, I have edited the admin path in the vqmod/xml file and it's now working fine.