Windows 3.1 build 061b

Windows 3.1.061b is mentioned in internal Microsoft e-mails from 1991-12. It is a recompile of build 61 and thus a Final Beta candidate.

The e-mail describes an issue when upgrading from build 58 to this build. Setup would always cause a general protection fault (GPF) after copying file. It is also revealed this build came on seven 5.25" 1.2MB installation disks.