versionitis

noun

1. (informal, uncountable)A situation in which there are many different (and possibly incompatible) versions of the same software, file or document.

   “This helps companies maintain an honest relationship with the software publisher and protects against versionitis.”

   “Versionitis exists when the team is using multiple versions of the same software[…] Integration of modules can be a nightmare when a project catches versionitis.”

   “The Handbook can suffer from versionitis; at this writing, the Handbook is one release behind the current version of the software, making it out of date in parts.”