I recently started having issues with my computer hard drive so I created a backup in Thunderbird. I reloaded a new hard drive in my computer and I cannot import my profile. Thunderbird tells me the folder is invalid. Windows tells me the folder is empty if I try to extract the files. I tried manually copying the contents of the profile folder and that didnt work either. I connected my old hard drive as a flash drive and I cannot find my emails there either. Please help.