I went to open Mozilla Thunderbird on my desktop this morning, only to get the following error. XULRunner Error: Platform version 91.5.0 is not compatible with minVersion> = 91.4.1 maxVersion< = 91.4.1 I wen to the internet and was direct to a product named RESTORO. I downloaded it, paid for it. ran it. only to get no results that address my issue. I am operation Windows 10 Pro. If anyone could help it would be appreciated. Thanks Wayne Klinga