Cannot associate TB to send zip files

Sending a zip file gives the error message that no email program is installed or no association made. Zip file was missing from the default program file list in win7. I switched to Open with TB in zip file properties. Zip file was restored in default list that showed TB as default program, but still could not send with the same error. Tried a couple of solutions offered online (don't remember now) and lost explorer as a choice in zip file properties. Sendto file does exist and is associated with TB. System restore does not complete with an error no access to a file. CC cleaner and Malwarebytes are installed, but not active in real time so cannot be causing it. Any solution? Thanks