Local stopped working/ wont connect to database

Hi So i posted a couple of days ago asking for help with Local. It had stopped working and was stuck on th install process.stuck on machine host
I eventually had to uninstall the virtual box and reinstall it. It worked as the local app began to work again but it would not read the files any longer. i saved the file contents of the sites into a zip and tried to install as an import but now will not read the databases.
If anyone can help out it would be very much appreciated.